Specifications

To erase the RTC RAM:
1. TurnOFFthecomputerandunplugthepowercord.
2. 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.
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.
ExceptwhenclearingtheRTCRAM,neverremovethecaponCLRTCjumperdefault
position.Removingthecapwillcausesystembootfailure!
• Ifthestepsabovedonothelp,removetheonboardbatteryandmovethe
jumper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.
1.6 Jumpers
Clear RTC RAM (3-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.
H81M-C R2.0
H81M-C R2.0 Clear RTC RAM
1 2 2 3
Normal
(Default)
Clear RTC
CLRTC
1-12
Chapter 1: Product introduction