Asus P4SD User Guide - Page 11

5. Jumper Clear RTC RAM (3-pin J19) 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 jumper cap from pins 2-3 (Normal) to pins 1-2 (Clear CMOS). Keep the cap on pins 2-3 for about 5~10 seconds, then move the cap back to pins 2-3. 3. Plug the power cord and turn ON the computer. 4. Hold down the key during the boot process and enter BIOS setup to re-enter data. Except when clearing the RTC RAM, never remove the cap on jumper J19 default position. Removing the cap will cause system boot failure! P4SD-LA P4SD-LA Clear RTC RAM J19 3 2 1 Clear CMOS 3 2 1 Normal (Default) ASUS P4SD-LA motherboard 7