Lenovo K450e Desktop- Manuals

Chapter 2. Safety information This chapter contains the safety information that you need to be familiar with before servicing a computer. General safety Follow these rules to ensure general safety: • Observe good housekeeping in the area of the machines during and after maintenance. • When lifting a...

• Avoid contact with other people while handling the part. • Wear a grounded wrist strap against your skin to eliminate static on your body. • Prevent the part from touching your clothing. Most clothing is insulative and retains a charge even when you are wearing a wrist strap. • Use the black side ...

To Connect To Disconnect 1. Turn everything OFF. 2. First, attach all cables to devices. 3. Attach signal cables to connectors. 4. Attach power cords to outlet. 5. Turn device ON. 1. Turn everything OFF. 2. First, remove power cords from outlet. 3. Remove signal cables from connectors. 4. Remove all...

Chapter 3. General information This chapter provides general information that applies to all machine types supported by this publication. Specifications This section lists the physical specifications for your computer. This section lists the physical specifications for your computer. Type Lenovo K45...

Chapter 4. General Checkout Attention: The drives in the computer you are servicing might have been rearranged or the drive startup sequence changed. Be extremely careful during write operations such as copying, saving, or formatting.Data or programs can be overwritten if you select an incorrect dri...

Chapter 5. Using the Setup Utility 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. Starting the...

To set a Power-On Password, do the following: 1. Start the Lenovo BIOS Setup Utility program (See ”Starting the Lenovo BIOS Setup Utility program” on page 13.) 2. From the Security menu, select Set Power-On Password and press the Enter key. 3. The password dialog box will be displayed. Type the pass...

USB Setup press the Enter key, and then select USB Functions . ATA Device Setup press the Enter key. Select Configure SATA as , press the Enter key and then select SATA mode. Audio Setup press the Enter key, and then select Onboard Audio Controller . Network Setup press the Enter key, then select On...

b. If you have changed these settings and want to return to the default settings, select Load Optimal Defaults from the menu. Exiting the Lenovo BIOS Setup Utility program After you finish viewing or changing settings, press the Esc key to return to the Lenovo BIOS Setup Utility program main menu. Y...

Chapter 6. Symptom-to-FRU Index The Symptom-to-FRU index lists error symptoms and possible causes. The most likely cause is listed first.Always begin with Chapter 4, “General Checkout,” on page 11. This index can also be used to help youdecide which FRUs to have available when servicing a computer. ...

POST error codes Each time you turn the computer on, it performs a series of tests to check that the system is operatingcorrectly and that certain options are set. This series of tests is called the Power-On Self-Test , or POST . POST does the following: • Checks some basic system-board operations •...

Chapter 8. Replacing hardware Attention: Do not remove the computer cover or attempt any repair before reading the “Important safety information” in the Safety and Warranty Guide that was included with your computer. To obtain copies of the Safety and Warranty Guide, go to the Support Web site at:ht...

Replacing the keyboard and mouse Note: Your keyboard will be connected to a USB connector at either front or at the rear of the computer. To replace the keyboard: Step 1. Remove any media (disks, CDs, or memory cards) from the drives, shut down the computer, andturn off all attached devices. Step 2....

Step 5. Slide the computer cover out to remove it. Step 6. To reinstall the computer cover: a. Line up the computer cover with the chassis then slide it back. b. Secure the computer cover to the chassis with the screws. Removing the front bezel Note: For this procedure, it helps to lay the computer ...

Step 2. Remove the front bezel by releasing the three plastic tabs inside the chassis and pulling the bezelout as shown. Step 3. To reattach the bezel, align the plastic tabs on the bottom of the bezel with the corresponding holesin the chassis, and then snap it into position. Replacing a memory mod...

Step 4. Position the new memory module over the memory connector. Make sure that the notch 1 on the memory module aligns correctly with the connector key 2 on the system board. Push the memory module straight down into the connector until the retaining clips close. Step 5. Reattach the computer cove...

Step 4. Remove the hard disk drive from the plastic bracket as shown. Step 5. Line up the new hard disk drive with the plastic bracket and snap it into position. Step 6. Slide the new hard disk drive into the drive bay and slide the drive bay into place. Step 7. Connect the power and signal cables t...

Replacing a graphics card Note: For this procedure, it helps to lay the computer flat. To replace a graphics card: Step 1. Remove the computer cover. Refer to “Removing the computer cover”. Step 2. Remove the screw that secures the graphics card fixing bracket and lift the bracket up. Step 3. Remove...

1 2 3 Step 5. Remove the graphics card by lifting it straight out of the connector. Step 6. Install the new adapter into the same adapter connector and secure it to chassis with the screw. Step 7. Turn the graphics card latch to the closed position and secure it with the screw. Step 8. Reattach the ...

Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operatingsystem, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. This includes power cords, ...

Step 6. Remove the 4 screws that secure the microprocessor fan to the heat-sink and lift up themicroprocessor fan to remove it. Step 7. To install the new microprocessor fan: a. Line up the new microprocessor fan with the heat-sink and secure it to the heat-sink with4 screws. b. Connect the micropro...

Step 7. Lift up the heat-sink to remove it. Step 8. Install the new heat-sink ： a. Line up the screws on the new heat-sink with mounting holes on the motherboard and secureit with the 4 screws. b. Reattach the microprocessor fan to the heat-sink. c. Reconnect the microprocessor fan power cable to th...

Step 8. Holding the sides of the microprocessor with your fingers, remove the protective cover 1 that protects the gold contacts on the new microprocessor. 2 Step 9. Holding the sides of the microprocessor with your fingers, position the microprocessor so that thenotches on the microprocessor are al...

To replace the Wi-Fi card: Step 1. Remove any media (disks, CDs, DVDs, or memory cards) from the drives, shut down the operatingsystem, and turn off the computer and all attached devices. Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. ...

Step 2. Unplug all power cords from electrical outlets. Step 3. Disconnect all cables attached to the computer. This includes power cords, input/output (I/O)cables, and any other cables that are connected to the computer. Refer to “Left and right view”and “Rear view” for help with locating the vario...

Chapter 9. General information This chapter provides general information that applies to all machine types supported by this publication. Additional Service Information This chapter provides additional information that the service representative might find helpful. Power management Power management ...