Hope someone can help me. I have a system running Win Xp Pro. AMD XP 2200+, 512 PC2100 DDR RAM, Maxtor 60 GB HDD. ANyways, I noticed system was showing CPU speed as 1350 Mhz at start up. I ran MadOnion PC2002 Benchmark program and it too showed my system as 1350 CPU. I went into BIOS and changed CPU speed to 133 mhz from 66 mhz (?). Now system won't even boot up. This is what happens when you get somebody who apparently doesn't know what they are doing in front of the screen!! PLease help!!! Thanks, Benzm1