User Manual

Table Of Contents

ASUS PRIME X299-A Series

1-11

Chapter 1

1.1.7 Jumpers and holes

1. Clear RTC RAM jumper (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.

ToerasetheRTCRAM:

1. TurnOFFthecomputerandunplugthepowercord.

2. Short-circuitpin1-2withametalobjectorjumpercapforabout5-10seconds.

3. PlugthepowercordandturnONthecomputer.

4. Holddownthe<Delete>keyduringthebootprocessandenterBIOSsetuptore-enter

data.

ExceptwhenclearingtheRTCRAM,neverplaceametalobjectorjumpercaponthe

CLRTCjumper.Placingametalobjectorjumpercapwillcausesystembootfailure!

• Ifthestepsabovedonothelp,removetheonboardbatteryandplaceametalobject

orjumpercapagaintocleartheCMOSRTCRAMdata.AftertheCMOSclearance,

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C.P.R.(CPUParameterRecall)feature.

ShutdownandrebootthesystemsotheBIOScanautomaticallyresetparameter

settingstodefaultvalues.

• Duetothechipsetbehavior,ACpoweroffisrequiredtoenableC.P.R.function.You

mustturnoffandturnonthepowersupplyorunplugandplugthepowercordbefore

rebootingthesystem.