Asus K8U-X User Manual download pdf (Page 26)

Chapter 1: Product Introduction

1-16

1.9 Jumpers

The onboard jumpers supply some conﬁgurations about special functions,

in order to satisfy usersʼ requirements.

Except when clearing the RTC RAM, never remove the cap on the

jumper default position. Removing the cap will cause system boot failure!

Clear RTC RAM (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 RAM data in CMOS, that include

system setup information such as system passwords, is powered by the

onboard button cell battery.

To erase the RTC RAM:

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

2. Move the battery away from motherboard.

3. 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.

4. Plug the power cord and turn ON the computer.

5. Hold down the <Del> key during the boot process and enter

BIOS setup to re-enter data.

K8U-X

K8U-X Clear RTC RAM

CLRTC

Normal Clear CMOS

(Default)

2 2

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

BIOS can automatically reset parameter settings to its previous values.

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Asus K8U-X User Manual Page 26