Specifications

1-12

Chapter 1: Product introduction

1.6 Headers

Clear RTC RAM (2-pin CLRTC)

Thisheader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. 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.

B85M-D PLUS Clear RTC RAM

B85M-D PLUS

1 2 1 2

Normal

(Open)

Clear CMOS Values

(Short)

CLRTC