Dell Vostro 2521- Manuals

After Working Inside Your Computer After you complete any replacement procedure, ensure you connect any external devices, cards, and cables before turning on your computer. CAUTION: To avoid damage to the computer, use only the battery designed for this particular Dell computer. Do not use batteries...

2 Removing and Installing Components This section provides detailed information on how to remove or install the components from your computer. Recommended Tools The procedures in this document may require the following tools: • Small flat-blade screwdriver • Phillips screwdriver • Small plastic scri...

Installing the Hard-Drive Assembly 1. Align the hard drive on the hard-drive bracket and snap it into place. 2. Tighten the screws to secure the hard drive to the hard-drive bracket. 3. Slide the hard-drive assembly in its slot in the computer. 4. Replace the screws to secure the hard-drive assembly...

5. Disconnect the keyboard cable from the connector on the system board and lift the keyboard off the palmrest assembly. Installing the Keyboard 1. Connect the keyboard cable to the connector on the system board. 2. Slide the keyboard in its place on the computer and snap it into place. 3. Install t...

Installing the Palmrest 1. Align and press the plamrest on the computer until it snap into place at all sides. 2. Connect the touchpad cable and the power-button cables to the system board. 3. Tighten the screws to secure the palmrest to the system board. 4. Flip the computer and tighten the screws ...

Installing the Input/Output (I/O) Board 1. Place the I/O board in its slot and snap it in place. 2. Tighten the screw to secure the I/O board to the computer. 3. Connect the I/O cable to the system board. 4. Install:a) palmrestb) keyboardc) optical-drive assemblyd) memory modulee) access panelf) bat...

c) I/O board cable 6. Remove the screw that secures the system board to the computer. 7. Lift the system board from the computer. Installing the System Board 1. Align the system board in its place on the computer. 2. Tighten the screw to secure the system board to the computer. 3. Connect the follow...

i) battery 5. Follow the procedures in After Working Inside Your Computer. Removing the Speakers 1. Follow the procedures in Before Working Inside Your Computer. 2. Remove:a) batteryb) access panelc) memory moduled) hard-drive assemblye) optical-drive assemblyf) keyboardg) plamresth) wireless mini-c...

c) memory moduled) hard-drive assemblye) optical-drive assemblyf) keyboardg) palmresth) display assembly 3. Press the hinge cover on the side. Lift and remove it from the computer. 4. Pry the edges of the display bezel. Remove the display bezel from the computer. Installing the Display Bezel 1. Alig...

f) hard-drive assemblyg) memory moduleh) access paneli) battery 4. Follow the procedures in After Working Inside Your Computer. Removing the Display Panel 1. Follow the procedures in Before Working Inside Your Computer. 2. Remove:a) batteryb) access panelc) memory moduled) hard-drive assemblye) opti...

3. Remove the screw, peel the tape and disconnect the camera cable from the connector and remove the camera module from the display assembly. Installing the Camera Module 1. Connect the camera cable to the connector on the camera module. 2. Align the camera module in its position on the computer. 3....

3 System Setup System Setup enables you to manage your computer hardware and specify BIOS ‐ level options. From the System Setup, you can: • Change the NVRAM settings after you add or remove hardware • View the system hardware configuration • Enable or disable integrated devices • Set performance an...

Keys Navigation <Enter> Allows you to select a value in the selected field (if applicable) or follow the link in the field. Spacebar Expands or collapses a drop ‐ down list, if applicable. <Tab> Moves to the next focus area. NOTE: For the standard graphics browser only. <Esc> Moves...

Table 5. Boot Options Option Description Secure Boot Allows you to boot securely. (Default: Disabled) Load Legacy Option ROM Allows you to load legacy option. (Default: Disabled) Boot List Option Allows you to view the boot options. Add Boot Option Allows you to add a boot option. Delete a Boot Opti...

4 Diagnostics If you experience a problem with your computer, run the ePSA diagnostics before contacting Dell for technical assistance. The purpose of running diagnostics is to test your computer's hardware without requiring additional equipment or risking data loss. If you are unable to fix the pro...

5 Troubleshooting Enhanced Pre-Boot System Assessment (ePSA) Diagnostics The ePSA diagnostics (also known as system diagnostics) performs a complete check of your hardware. The ePSA is embedded with the BIOS and is launched by the BIOS internally. The embedded system diagnostics provides a set of op...

Turns on when wireless networking is enabled. If the computer is connected to an electrical outlet, the battery light operates as follows: Table 7. Battery Status Lights Alternately blinking amber light and blue light An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop. ...

Code Cause and Troubleshooting StepsMemory failure 5 Real-time clock power failCMOS battery failure 6 Video BIOS test failureVideo card failure 7 CPU - cache test failureProcessor failure 8 DisplayDisplay failure LED Error Codes Diagnostic LED codes are communicated via the Power Button LED. The Pow...

6 Technical Specifications NOTE: Offerings may vary by region. For more information regarding the configuration of your computer, click Start (Start icon) → Help and Support, and then select the option to view information about your computer. Table 9. System Information Feature Description Chipset I...

7 Contacting Dell NOTE: If you do not have an active Internet connection, you can find contact information on your purchase invoice, packing slip, bill, or Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, ...