Clearing Cmos Settings; Flashing The Bios - Dell Dimension C521 Service Manual

Clearing CMOS Settings

CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the Product Information Guide.
1. Follow the procedures in Before You
2. Reset the current CMOS settings:
a. Locate the 2-pin CMOS jumper (RTCRST) on the system board. See
b. Remove the jumper plug from pin 1.
c. Place the jumper plug on pins 1 and 2 and wait approximately five seconds.
d. Replace the jumper plug on pin 1.
3. Replace the computer cover. See
NOTICE: To connect a network cable, first plug the cable into the network port or device, and then plug it into the computer.
4. Connect your computer and devices to electrical outlets, and then turn them on.
Flashing the BIOS
The BIOS may require a new flash when an update is available or when replacing the system board.
1. Turn on the computer.
2. Locate the BIOS update file for your computer at support.dell.com.
3. Click Download Now to download the file.
4. If the Export Compliance Disclaimer window appears, click Yes, I Accept the Agreement.
The FIle Download window appears.
5. Click Save this program to disk and then click OK.
The Save In window appears.
6. Click the down arrow to view the Save In menu, select Desktop, and then click Save.
The file downloads to your desktop.
7. Click Close when the Download Complete window appears.
The file icon appears on your desktop and is titled the same as the download BIOS update file.
8. Double-click the file icon on the desktop and follow the on-screen instructions.
Back to Contents Page
Begin.
Replacing the Computer Cover.
Jumper Locations.