i have a old computer that i was messing around with, a windows ME, and the processor is a pentium 3 i had another pc that had a better cpu but when after i installed it the pc stays at the hp screen and the os doesn't boot. I even put the old cpu back in and the same thing happens. i think i may have bumped the graphics card more than i should have but i don't know does anybody know what the problem could be?? thanks