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CHAPTER 4: Upgrading Your Computer
50
6 Press the card retention lever down until it clicks into
place.
7 Replace the PCI riser card by sliding it back into place.
8 Replace the back panel by following the instructions in
“Replacing the back panel” on page 36.
Replacing the BIOS battery
If the computer clock does not keep time or the settings in
the BIOS Setup utility are not saved when you turn off your
computer, replace the system battery. Use a battery of the
same size and voltage as the original battery that was in your
computer.
To replace the battery:
1 Restart your computer.
2 During the restart, press and hold the F1 key. The main
menu of the BIOS Setup utility opens.
3 Because changing the BIOS battery will reset the BIOS
to factory default settings, write down the values you
may have changed from the factory settings, then exit
from the utility.
4 Remove the back panel by following the instructions in
“Opening the case” on page 35.
5 Remove the processor fan by following the instructions
in “Replacing the processor fan” on page 37.
Warning
Danger of explosion if battery is incorrectly replaced. Replace only with
the same or equivalent type recommended by the manufacturer. Dispose of
used batteries following the manufacturer’s instructions.
8512032.book Page 50 Tuesday, January 9, 2007 1:47 PM