Service Manual

3. Remove the both the left and right side-panels. See “Removing the Side Panels”.
4. Locate the CMOS jumper (CLEAR_CMOS1) on the system board. See “System-Board Components”.
5. Remove the jumper plug from pins 2 and 3 and fix it on pins 1 and 2.
6. Wait for approximately five seconds to clear the CMOS setting.
7. Remove the jumper plug from pins 1 and 2 and replace it on pins 2 and 3.
1. pin 1 2. pin 2
3. pin 3 4. jumper plug
8. Replace the left side-panel. See "Replacing the Side Panels”.
9. Replace the stability foot.
Flashing the BIOS
You may need to flash (update) the BIOS when an update is available or when you replace the system board. To flash the BIOS:
1. Turn on the computer.
2. Go to dell.com/support.
3. If you have your computer's Service Tag, type your computer's Service Tag and click Submit.
If you do not have your computer's Service Tag, click Detect My Product to allow automatic detection of the Service Tag.
NOTE: If the Service Tag cannot be detected automatically, select your product under the product categories.
4. Click Get Drivers and Downloads.
5. Click View All Drivers.
6. In the Operating System drop-down, select the operating system installed on your computer.
7. Click BIOS.
8. Click Download File to download the latest version of the BIOS for your computer.
9. On the next page, select Single-file download and click Continue.
10.Save the file and once the download is complete, navigate to the folder where you saved the BIOS update file.
11. Double-click the BIOS update file icon and follow the instructions on the screen.
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