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The onboard button cell battery powers the CMOS RAM. It
contains all the BIOS setup information. Normally, it is necessary to
keep the jumper connected to pin2 and pin3 (Default) to retain the
RTC data as shown below.
1
2
3
1
2
3
1-2 CMOS
enable (default)
2-3 clear
CMOS
Figure 2-2: DK8S2 clear COMS header
Follow these instructions to clear the CMOS RTC data:
1. Turn off your computer.
2. Short pin2 and pin3 with a jumper for a few seconds.
3. Replace the jumper on pin1 and pin2.
4. Turn on your computer by pressing the power-on button.
5. Hold down <Delete> during boot and select either the <Load
Optimal Defaults> or <Load Failsafe Defaults> option in the
selection "Exit". Then re-enter BIOS setup to re-enter user
preferences. Refer to Chapter 2 BIOS SETUP for more
information.
