1.9 Jumpers
1. Clear RTC RAM (CLRTC)
This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Remove the onboard battery.
3. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5~10 seconds, then move the cap back to pins 1-2.
4. Reinstall the battery.
5. Plug the power cord and turn ON the computer.
6. Hold down the
<Del> key during the boot process and enter BIOS setup to reenter
data.
Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!
M2N68 SE
M2N68 SE Clear RTC RAM
1
2 2 3
Normal
(Default)
Clear RTC
CLRTC
You do not need to clear the RTC when the system hangs due to overclocking. For system
failure due to overclocking, use the CPU Parameter Recall (C.P.R) feature. Shut down and
reboot the system so the BIOS can automatically reset parameter settings to default values.
Chapter 1: Product introduction 1-17
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