Hi there, I've an ISSUE! What is easiest/safest way to overclock AMD Sempron 64 3000+ processor with socket 754 ASRock K8Upgrade-NF3 motherboard ( http://www.asrock.com/product/K8Upgrade-NF3.htm )? I've tryied to overclock my processor trought the BIOS (overclock mode), but everytime I boot, I'll get an error message "CMOS Checksum Bad". All tough, in Windows I could overclock my processor and graphic card with NTune, but overclock last until the next boot. I even have Zalman CNPS9500 LED processor cooler installed. Can anyone tell me, is there anykind of guide to do a safe overclock etc. Help the noob a.s.a.p.