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Clearing Forgotten Passwords 89
Clearing CMOS Settings
CAUTION: Before you begin any of the procedures in this section, follow the
safety instructions in the
Product Information Guide
.
1
Follow the procedures in "Before You Begin" on page 139.
2
Remove the computer cover (see "Removing the Computer Cover" on
page 141).
3
Reset the current CMOS settings:
a
Locate the password and CMOS jumpers (RTCRST) on the system
board (see "System Board Components" on page 27.
b
Remove the password jumper plug from its pins.
c
Place the password jumper plug on the RTCRST pins and wait
approximately 5 seconds.
d
Remove the jumper plug from the RTCRST pins and place it back
upon the password pins.
4
Replace the computer cover (see "Replacing the Computer Cover" on
page 145).
NOTICE: To connect a network cable, first plug the cable into the network port or
device and then plug it into the computer.
5
Connect your computer and devices to electrical outlets, and turn them
on.
Flashing the BIOS
The BIOS may require flashing 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 the Dell Support
website at
support.dell.com
.
3
Click
Download Now
to download the file.
4
If the
Export Compliance Disclaimer
window appears, click
Yes, I Accept
this Agreement
.
The
File Download
window appears.