HP Vectra VL410 Troubleshooting Manual
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If You Have a Problem
29
Clearing Your PC’s CMOS (BIOS) Settings
CMOS is a chip that keeps a record of installed components when your PC is turned off. Clearing CMOS
settings may help you resolve some common problems. For example:
•
when your PC cannot detect an expansion card or other device
•
when you are having problems booting the PC.
You can clear CMOS settings:
•
by using your PC’s BIOS Setup program
•
by opening your PC and clearing CMOS manually.
Clearing CMOS Using the Setup Program
If you are able to gain access to your PC’s Setup program, use the following simple method to clear
CMOS settings:
1 Restart your PC and press F8 when the HP logo appears, then select
Enter Setup
. Refer to page 27.
2 From within the Setup program, press F9 to load Setup defaults.
3 Press F10 to exit Setup saving changes.
Note
If you load CMOS default settings from within the
Setup
program, this will not clear passwords.
Manually Clearing CMOS and Passwords
1 Disconnect the PC and remove the cover.
2 Set the Clear CMOS/Password Switch 1 to ON.
3 Replace the cover then reconnect the power cord.
4 Turn on the PC. This will erase the CMOS memory.
Wait until the PC has restarted. A message will be displayed saying that the configuration has been
cleared.
5 Turn off the PC, disconnect the power cord, then remove the hard disk drive cover and hard disk drive.
6 Set the clear CMOS/Password switch to OFF to re-enable the configuration.
7 Replace the hard disk drive and hard disk drive cover, then reconnect the power cord.
8 Switch on the PC. The PC will start more slowly than usual because it will load the default
configuration values.
Clear CMOS/Password
switch (switch 1)