Clear CMOS: JP3

The CMOS RAM is powered by the onboard button cell battery. To clear the RTC data:

(1) Turn off your computer
(2) Place the jumper cap onto the pinpair 2-3 at least 6 seconds to enable CMOS clearance
(3) Place the jumper cap onto the pinpair 1-2 to disable the effect of CMOS clearance
(4) Turn on your computer until CMOS checksum error appears
(5) Hold down the Delete key when boots
(6) Enter the BIOS Setup to re-enter user preferences.