Page 3 - Contents
Contents Important safety information . . . . . . v Service and upgrades . . . . . . . . . . . . . v Static electricity prevention . . . . . . . . . . . v Power cords and power adapters . . . . . . . . viExtension cords and related devices . . . . . . . viPlugs and outlets. . . . . . . . . . . . . ....
Page 4 - ii
Chapter 6. Recovery information . . . 63 Creating and using recovery media . . . . . . 63 Creating recovery media . . . . . . . . . 63 Using recovery media . . . . . . . . . . 64 Performing backup and recovery operations . . . 64 Performing a backup operation . . . . . . 64 Performing a recovery ope...
Page 5 - iii
Television output notice . . . . . . . . . . . 109 Electronic emissions notices . . . . . . . . . 109 Federal Communications CommissionDeclaration of Conformity . . . . . . . . 109 Additional regulatory information . . . . . . . 111 Appendix C. WEEE and recyclinginformation . . . . . . . . . . . . ....
Page 6 - iv
Page 7 - Important safety information; Service and upgrades; Hazardous moving parts. Keep fingers and other body parts away.; Static electricity prevention
Important safety information CAUTION:Before using this manual, be sure to read and understand all the related safety information for thisproduct. Refer to the information in this section and the safety information in the ThinkCentre Safety and Warranty Guide that you received with this product. Read...
Page 8 - Power cords and power adapters; Extension cords and related devices
or CRU, do not open the static-protective package containing the part until the instructions direct youto install it. When you handle options or CRUs, or perform any work inside the computer, take the following precautionsto avoid static-electricity damage: • Limit your movement. Movement can cause ...
Page 9 - vii
Plugs and outlets If a receptacle (power outlet) that you intend to use with your computer equipment appears to be damagedor corroded, do not use the outlet until it is replaced by a qualified electrician. Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a r...
Page 10 - viii
For your safety and to maintain optimum computer performance, always follow these basic precautionswith your desktop computer: • Keep the cover closed whenever the computer is plugged in. • Regularly inspect the outside of the computer for dust accumulation. • Remove dust from vents and any perforat...
Page 11 - Laser compliance statement; might result in hazardous radiation exposure.; Power supply statement; ix
Laser compliance statement CAUTION:When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) areinstalled, note the following: • Do not remove the covers. Removing the covers of the laser product could result in exposure to hazardous laser radiation. There are no servic...
Page 13 - Chapter 1. Product overview; Features
Chapter 1. Product overview This chapter provides information about the computer features, specifications, software programs providedby Lenovo, and locations of connectors, components, parts on the system board, and internal drives. Features This section introduces the computer features. The informa...
Page 16 - Specifications; Software overview
Specifications This section lists the physical specifications for your computer. Dimensions Width: 175 mm (6.89 inches) Height: 414 mm (16.30 inches) Depth: 442 mm (17.40 inches) Weight Maximum configuration as shipped: 11 kg (24.25 lb) Environment • Air temperature: Operating: 10°C to 35°C (50°F to...
Page 17 - Lenovo ThinkVantage Tools; Lenovo Welcome
Lenovo ThinkVantage Tools The Lenovo ThinkVantage ® Tools program guides you to a host of information sources and provides easy access to various tools to help you work more easily and securely. To access the Lenovo ThinkVantage Tools program, click Start ➙ All Programs ➙ Lenovo ThinkVantage Tools ....
Page 19 - ThinkVantage System Update; Adobe Reader
ThinkVantage System Update The ThinkVantage System Update program helps you keep the software on your computer up-to-date bydownloading and installing software packages (ThinkVantage applications, device drivers, BIOS updates,and other third party applications). Adobe Reader The Adobe Reader program...
Page 21 - Locating connectors on the rear of your computer
Locating connectors on the rear of your computer Figure 2 “Rear connector locations” on page 9 shows the locations of the connectors on the rear of yourcomputer. Some connectors on the rear of your computer are color-coded to help you determine where toconnect the cables on your computer. 3 4 5 6 7 ...
Page 23 - Locating components
Locating components Figure 3 “Component locations” on page 11 shows the locations of the various components in yourcomputer. To remove the computer cover, see “Removing the computer cover” on page 30. Figure 3. Component locations 1 Heat sink and fan assembly 7 Hard disk drive 2 Memory modules 8 PCI...
Page 24 - Locating parts on the system board
Locating parts on the system board Figure 4 “System board part locations” on page 12 shows the locations of the parts on the system board. Figure 4. System board part locations 1 Microprocessor 14 Front panel connector (for connecting LED indicators and power switch) 2 Microprocessor fan connector 1...
Page 25 - Locating internal drives
Locating internal drives Internal drives are devices that your computer uses to read and store data. You can add drives to yourcomputer to increase storage capacity and enable your computer to read other types of media. Internaldrives are installed in bays. In this manual, the bays are referred to a...
Page 26 - Machine type and model label
Machine type and model label The machine type and model label identifies your computer. When you contact Lenovo for help, the machinetype and model information helps support technicians to identify your computer and provide faster service. The following is a sample of the machine type and model labe...
Page 27 - Chapter 2. Using your computer; Frequently asked questions
Chapter 2. Using your computer This chapter provides information on using some of the computer components. Frequently asked questions The following are a few tips that will help you optimize the use of your computer. Can I get my user guide in another language? The user guide is available in various...
Page 28 - Using a fingerprint reader; Adjusting audio
Note: You can use the mouse or the Up and Down arrow keys to highlight menu selections. You can close the Start menu or the context menu by clicking the mouse or pressing Esc. Using a fingerprint reader Some computers might come with a keyboard that has a fingerprint reader. For more information abo...
Page 30 - Start
• Hold the disc by its edges. Do not touch the surface of the side that is not labeled. • To remove dust or fingerprints, wipe the disc with a clean, soft cloth from the center to the outside. Wiping the disc in a circular direction might cause loss of data. • Do not write or stick paper on the disc...
Page 31 - Chapter 3. You and your computer; Accessibility and comfort
Chapter 3. You and your computer This chapter provides information about accessibility, comfort, and relocating your computer to othercountries or regions. Accessibility and comfort Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort.Arrange your ...
Page 33 - Voltage-selection switch
Register your computer with Lenovo To register your computer, go to http://www.lenovo.com/register. Then, follow the instructions on the screento complete the registration. This can help authorities return your computer to you if it is lost or stolen.Registering your computer also enables Lenovo to ...
Page 35 - Security features; Security
Chapter 4. Security This chapter provides information about how to protect your computer from theft and unauthorized use. Security features The following security features are available on your computer: • Computrace Agent software embedded in firmware The Computrace Agent software is an IT asset ma...
Page 36 - Locking the computer cover
Locking the computer cover Locking the computer cover helps prevent unauthorized people from gaining access to the inside of yourcomputer. Your computer comes with a padlock loop so that the computer cover cannot be removedwhen a padlock is installed. Figure 7. Installing a padlock 24 ThinkCentre Us...
Page 37 - Attaching an integrated cable lock; Using passwords
Attaching an integrated cable lock An integrated cable lock, sometimes referred to as the Kensington lock, can be used to secure yourcomputer to a desk, table, or other non-permanent fixture. The cable lock attaches to the integrated cablelock slot at the rear of your computer and is operated with a...
Page 41 - Chapter 5. Installing or replacing hardware; Handling static-sensitive devices; Installing or replacing hardware; Installing external options
Chapter 5. Installing or replacing hardware This chapter provides instructions on how to install or replace hardware for your computer. Handling static-sensitive devices Do not open the static-protective package containing the new part until the defective part has been removedfrom the computer and y...
Page 42 - Removing the computer cover
Removing the computer cover Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”on page v. This section provides instructions on how to remove the computer cover. CAUTION: Turn off the computer and wait three to five minutes t...
Page 43 - Removing and reinstalling the front bezel; Installing or replacing a PCI card
Removing and reinstalling the front bezel Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”on page v. This section provides instructions on how to remove and reinstall the front bezel. To remove and reinstall the front beze...
Page 46 - Installing or replacing a memory module
7. Pivot the card latch to the closed position to secure the PCI card. Figure 13. Installing a PCI card What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to “Completing the parts replacement” on page 61. Instal...
Page 48 - Installing or replacing the optical drive
7. Position the new memory module over the memory slot. Make sure that the notch 1 on the memory module aligns correctly with the slot key 2 on the system board. Push the memory module straight down into the slot until the retaining clips close. Figure 16. Installing a memory module 8. Reinstall the...
Page 50 - Installing or replacing the card reader
6. Slide the new optical drive into the drive bay from the front of the computer until the optical drive snaps into position. Figure 19. Installing the optical drive 7. Connect the signal cable and the power cable to the new optical drive. Figure 20. Connecting the optical drive 8. Reinstall the fro...
Page 51 - Installing the card reader
This section provides instructions on how to install or replace the card reader. Note: The card reader is only available in some models. For new installation, see “Installing the card reader” on page 39. For replacement, see “Replacing the card reader” on page 41. Installing the card reader To insta...
Page 53 - Replacing the card reader
What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete the installation or replacement, go to “Completing the parts replacement” on page 61. Replacing the card reader Attention: Do not open your computer or attempt any repair before reading and unders...
Page 54 - Replacing the battery
7. Install the card reader retainer on the side of the new card reader. Figure 26. Installing the card reader retainer 8. Slide the new card reader into the drive bay until it snaps into position. Figure 27. Installing the card reader 9. Reconnect the card reader cable to Front USB connector 2 on th...
Page 56 - Replacing the power supply assembly
Replacing the power supply assembly Attention: Do not open your computer or attempt any repair before reading and understanding the “Important safety information”on page v. This section provides instructions on how to replace the power supply assembly. Although there are no moving parts in your comp...
Page 57 - Replacing the heat sink and fan assembly
5. Lay the computer on its side and remove the four screws at the rear of the chassis that secure the power supply assembly. Figure 30. Removing the screws for the power supply assembly 6. Slide the power supply assembly to the front of the computer and then lift it out of the chassis. 7. Ensure tha...
Page 59 - Replacing the microprocessor
9. Position the new heat sink and fan assembly on the microprocessor socket and then position the clamp on the plastic retention bracket. Pivot the handle 1 to clamp the heat sink and fan assembly to the plastic retention bracket. Figure 32. Reinstalling the heat sink and fan assembly 10. Connect th...
Page 61 - Replacing the primary hard disk drive
b. Note the orientation of the microprocessor in the socket. You can look for the small triangle 1 on one corner of the microprocessor. This is important when installing the new microprocessoron the system board. c. Touch only the edges of the microprocessor. Do not touch the gold contacts on the bo...
Page 63 - Replacing the secondary hard disk drive
12. Connect the signal cable and the power cable to the new hard disk drive. 13. Press down on the metal latch 2 and pivot the drive cage into place, and then slide it to the front of the computer until it snaps into position. Note: There are two arrows, one on the upper drive cage and one on the ha...
Page 65 - Replacing the front fan assembly
11. Install the hard disk drive cage into the chassis until it snaps into position underneath the metal tab. Make sure that the hard disk drive cage release button is secured in the chassis. Figure 40. Installing the secondary hard disk drive 12. Connect the signal cable and the power cable to the n...
Page 67 - Replacing the rear fan
6. Insert the two tabs 2 of the new front fan assembly into the corresponding holes in the chassis, and press the other two tabs 1 through the holes until the front fan assembly is secured in place. Figure 42. Installing the front fan assembly 7. Connect the front fan assembly cable to the power fan...
Page 69 - Replacing the front audio and USB assembly
7. Pull on the tips of the rubber mounts until the rear fan is secured in place. Figure 44. Installing the rear fan 8. Connect the rear fan cable to the system fan connector on the system board. What to do next: • To work with another piece of hardware, go to the appropriate section. • To complete t...
Page 70 - Replacing the internal speaker
Note: Make sure you note the locations of the cables when you disconnect the cables from the system board. 6. Remove the screw that secures the front audio and USB assembly bracket to the chassis to remove the bracket from the chassis. Figure 45. Removing the screw that secures the front audio and U...
Page 72 - Replacing the keyboard or mouse
6. Position the new internal speaker into the four metal clips 1 and push the internal speaker downward until it is secured in place. Figure 47. Installing a new internal speaker 7. Connect the internal speaker cable to the system board. See “Locating parts on the system board” on page 12. What to d...
Page 73 - Completing the parts replacement
2. Connect a new keyboard or mouse to one of the USB connectors on the computer. Depending on where you want to connect the new keyboard or mouse, see “Locating connectors, controls, and indicators onthe front of your computer” on page 8 or “Locating connectors on the rear of your computer” on page ...
Page 74 - Obtaining device drivers
4. Position the computer cover on the chassis so that the rail guides on the bottom of the computer cover engage the rails on the chassis. Then, push the cover to the front of the computer until it snapsinto position. Figure 49. Reinstalling the computer cover 5. Install the screws to secure the com...
Page 75 - Chapter 6. Recovery information; Creating and using recovery media
Chapter 6. Recovery information This chapter provides information about the recovery solutions provided by Lenovo. This chapter contains the following topics: • Creating and using recovery media • Performing backup and recovery operations • Using the Rescue and Recovery workspace • Creating and usin...
Page 77 - Performing a recovery operation; Using the Rescue and Recovery workspace
3. Click Back up your hard drive and select backup operation options. Then, follow the instructions on the screen to complete the backup operation. Performing a recovery operation This section provides instructions on how to perform a recovery operation using the Rescue and Recoveryprogram. To perfo...
Page 79 - Reinstalling preinstalled applications and device drivers; Reinstalling preinstalled applications
3. In the Please select boot device window, select the USB hard disk drive as the first boot device and press Enter. The rescue medium starts. When the rescue medium starts, the Rescue and Recovery workspace opens. The help information foreach feature is available from the Rescue and Recovery worksp...
Page 80 - Reinstalling software programs; Reinstalling device drivers
Reinstalling software programs If a software program you installed on your computer is not working correctly, you might need to removeand reinstall it. Reinstalling overwrites the existing programs files and usually fixes any problems thatyou might have had with that program. To remove a program in ...
Page 83 - Chapter 7. Using the Setup Utility program; Starting the Setup Utility program; Save Changes and Exit; Viewing and changing settings
Chapter 7. Using the Setup Utility program The Setup Utility program is used to view and change the configuration settings of your computer, regardlessof which operating system you are using. However, the operating system settings might override any similarsettings in the Setup Utility program. Star...
Page 87 - Exiting the Setup Utility program
1. Start the Setup Utility program. 2. From the Setup Utility program main menu, select Power ➙ Automatic Power On , and press Enter. 3. Select Wake Up on Alarm and press Enter. Then follow the instructions on the screen. 4. Press F10 to save changes and exit the Setup Utility program. Press Enter w...
Page 89 - Chapter 8. Updating system programs; Using system programs
Chapter 8. Updating system programs This chapter provides information about updating the POST and BIOS, and how to recover from a POSTand BIOS update failure. Using system programs System programs are the basic layer of software built into your computer. System programs include thePOST, the BIOS, an...
Page 90 - Updating (flashing) the BIOS from your operating system; Enter a product number; Recovering from a POST/BIOS update failure
Updating (flashing) the BIOS from your operating system Note: Because Lenovo makes constant improvements to its Web sites, the Web page contents are subject to change without notice, including the contents referenced in the following procedure. To update (flash) the BIOS from your operating system, ...
Page 91 - Chapter 9. Preventing problems; Keeping your computer current
Chapter 9. Preventing problems This chapter provides information that can help you avoid common problems and keep your computerrunning smoothly. Keeping your computer current In some situations you may find it necessary to have the most current software programs, device drivers, oroperating system. ...
Page 92 - Using System Update; Cleaning and maintenance
Using System Update The System Update program helps you keep the software on your computer up-to-date. Update packagesare stored on Lenovo servers and can be downloaded from the Lenovo Support Web site. Update packagescan contain applications, device drivers, BIOS flashes, or software updates. When ...
Page 93 - Cleaning your computer; Computer; Cleaning a flat-panel monitor surface
Cleaning your computer It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-freeoperation. CAUTION:Be sure to turn off the computer and monitor power switches before cleaning the computer andmonitor screen. Computer Use only mild cleaning solutions and...
Page 94 - Cleaning a glass-screen surface; Good maintenance practices
Many computer supply stores carry the special cleaning fluids for displays. Use cleaning fluids developed forLCD displays only. First apply the fluid to a lint-free, soft cloth, then clean the LCD display. Some computersupply stores carry pre-moistened towelettes for LCD maintenance. Cleaning a glas...
Page 95 - Chapter 10. Troubleshooting and diagnostics; Basic troubleshooting
Chapter 10. Troubleshooting and diagnostics This chapter describes some basic troubleshooting and diagnostic programs. If your computer problemis not described here, see Chapter 11 “Getting information, help, and service” on page 103 for additionaltroubleshooting resources. Basic troubleshooting The...
Page 96 - Troubleshooting procedure; Troubleshooting
Symptom Action The operating system does notstart. Verify that: • The startup sequence includes the device where the operating system resides. Usually, the operating system is on the hard disk drive. For more information,see “Selecting a startup device” on page 74. The computer beeps multipletimes b...
Page 97 - Audio problems; No audio in Windows; On
Select the problem your computer is experiencing from the following list: • “Audio problems” on page 85 • “CD problems” on page 86 • “DVD problems” on page 87 • “Intermittent problems” on page 89 • “Keyboard, mouse, or pointing device problems” on page 89 • “Monitor problems” on page 90 • “Networkin...
Page 98 - CD problems
• Verify that the audio device drivers are correctly installed. See Microsoft Windows help system for more information. If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 99 for instructions). If you need technical assistance, see Chapter 11 “G...
Page 99 - A CD or DVD does not work; DVD problems; Black screen instead of DVD video
Actions: • If you have multiple CD or DVD drives installed (or a combination of CD and DVD drives), try inserting the disc into the other drive. In some cases, only one of the drives is connected to the audio subsystem. • If you are using the Windows 7 operating system, follow the action for “A CD o...
Page 101 - All or some keys on the keyboard do not work
• On computers that have a CD-ROM or CD-RW drive in addition to a DVD-ROM drive, make sure that the DVD disc is in the drive labeled “DVD”. If these actions do not correct the problem, run the diagnostic programs (see “Diagnostic programs” onpage 99 for instructions). If you need technical assistanc...
Page 102 - Monitor problems
The mouse or pointing device does not work Symptom: The mouse or pointing device does not work. Actions: • Verify that the mouse or pointing-device cable is securely attached to the correct connector on the computer. Depending on the type of mouse you have, the mouse cable will connect to either the...
Page 104 - The image is discolored; Networking problems; Ethernet problems
• The monitor might be operating in a low-refresh rate display mode. Set the monitor to the highest, noninterlaced refresh rate supported by your monitor and the video controller in your computer. Attention: Using a resolution or refresh rate that is not supported by your monitor might damage it. Ch...
Page 106 - A wireless LAN problem; Show hidden icons; A wireless WAN problem
If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connectionfails or errors occur Symptom: If your computer is a Gigabit Ethernet model and you use a speed of 1000 Mbps, the connectionfails or errors occur. Actions: • Use Category 5 wiring and make sure that the netw...
Page 107 - Option problems; An option that was just installed does not work
Sound does not come from the Bluetooth headphone Symptom: Sound does not come from the Bluetooth headset/headphone but comes from the local speakereven though the headset/headphone is connected using Headset profile or AV profile. Action: Do the following: 1. Exit the application that uses the sound...
Page 108 - Performance and lockup problems; Insufficient free hard disk drive space
Actions: • Verify that all option hardware and cable connections are secure. • If the option comes with its own test instructions, use those instructions to test the option. • If the failing option is a SCSI option, verify that: – The cables for all external SCSI options are connected correctly. – T...
Page 109 - Printer problems
2. Right-click your C drive entry and then click Properties . 3. Click Disk Cleanup . 4. Click Clean up system files . 5. Click the More Options tab. 6. In the Programs and Features area, click the Clean up button. 7. A list of installed applications is displayed. Select the application you want to ...
Page 110 - When using a sort feature, dates do not sort in the correct order
Note: Non-IEEE-approved printer signal cables might cause unpredictable problems. 1. Any device drivers and other software that came with the printer are correctly installed. 2. You have assigned the printer port correctly in your operating system, application program, or BIOS settings. For more inf...
Page 112 - Lenovo Solution Center
Notes: 1. Depending on the date when your computer was manufactured, your computer is preinstalled with either the Lenovo Solution Center program or the Lenovo ThinkVantage Toolbox program for diagnosticpurposes. For more information about the Lenovo ThinkVantage Toolbox program, See “LenovoThinkVan...
Page 113 - Creating a diagnostic disc; Running the diagnostic program from a diagnostic disc
PC-Doctor for DOS You can also download the latest version of the PC-Doctor for DOS diagnostic program fromhttp://support.lenovo.com. The PC-Doctor for DOS diagnostic program runs independently of the Windowsoperating system. Use the PC-Doctor for DOS diagnostic program if you are unable to start th...
Page 116 - Lenovo Support Web site; Problem determination
104 ThinkCentre User Guide Lenovo Support Web site Technical support information is available on the Lenovo Support Web site at:http://www.lenovo.com/support This Web site is updated with the latest support information such as the following: • Drivers and software • Diagnostic solutions • Product an...
Page 117 - Using other services; Warranty; Purchasing additional services
Chapter 11 . Getting information, help, and service 105 • Installation and maintenance of application programs Refer to the Safety, Warranty, and Setup Guide that comes with your computer for information about your warranty type and duration. You must retain your proof of purchase to obtain warranty...
Page 120 - Trademarks
Trademarks The following terms are trademarks of Lenovo in the United States, other countries, or both: LenovoThe Lenovo logoRescue and RecoveryThinkCentreThinkVantage Microsoft and Windows are trademarks of the Microsoft group of companies. AMD, AMD Athlon, AMD Phenom, AMD Sempron, and combinations...
Page 121 - Appendix B. Regulatory information; Export classification notice
Appendix B. Regulatory information Export classification notice This product is subject to the United States Export Administration Regulations (EAR) and has an ExportClassification Control Number (ECCN) of 4A994.b. It can be re-exported except to any of the embargoedcountries in the EAR E1 country l...
Page 122 - Industry Canada Class B emission compliance statement; German Class B compliance statement
Industry Canada Class B emission compliance statement This Class B digital apparatus complies with Canadian ICES-003. Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada. European Union - Compliance to the Electromagnetic Compatibility Directive This product is in conform...
Page 123 - User Guides & Manuals
Informationen in Hinsicht EMVG Paragraf 4 Abs. (1) 4: Das Gerät erfüllt die Schutzanforderungen nach EN 55024 und EN 55022 Klasse B. Korea Class B compliance statement Japanese VCCI Class B statement Japan compliance statement for products which connect to the power mains with rated currentless than...
Page 125 - Appendix C. WEEE and recycling information; Important WEEE Information
Appendix C. WEEE and recycling information Important WEEE Information The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for example,European Directive 2002/96/EC, India E-Waste Management & Handling Rules, 2011). Appliances arelabeled in accordance with ...
Page 126 - Recycling information for Brazil; Declarações de Reciclagem no Brasil; Battery recycling information for Taiwan
Collecting and recycling a disused Lenovo computer or monitor If you are a company employee and need to dispose of a Lenovo computer or monitor that is the propertyof the company, you must do so in accordance with the Law for Promotion of Effective Utilization ofResources. Computers and monitors are...
Page 127 - Battery recycling information for the European Union
Battery recycling information for the European Union Notice: This mark applies only to countries within the European Union (EU). Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/ECconcerning batteries and accumulators and waste batteries and accumulators...
Page 130 - India RoHS
India RoHS RoHS compliant as per E-Waste (Management & Handling) Rules, 2011. 118 ThinkCentre User Guide
Page 131 - Index
Index A a rescue medium, creating and using 66 Administrator, password 72 antivirus software 7 audio line-in connector 10 audio line-out connector 10 audio subsystem 1 B backup and recovery operations 64 basic troubleshooting 83 battery, replacing 42 boot-block recovery 78 C cable lock, security 25 ...