User's Manual

1-12
Chapter 1: Product introduction
1.6 Jumpers
Clear RTC RAM (2-pin 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.
A78M-E
A78M-E Clear RTC RAM
1 2 1 2
Normal
(Open)
Clear CMOS
(Short)
CLRTC
To erase the RTC RAM:
1. Turn OFF the computer and unplug the power cord.
2. Useametalobjectsuchasascrewdrivertoshortthetwopins.
3. Plug the power cord and turn ON the computer.
4. Holddownthe<Del>keyduringthebootprocessandenterBIOSsetuptore-
enter data.
• Ifthestepsabovedonothelp,removetheonboardbatteryandshortthetwopins
againtocleartheCMOSRTCRAMdata.AfterclearingtheCMOS,reinstallthe
battery.
• 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,thentheBIOSautomaticallyresetsparameter
settingstodefaultvalues.