I am working on an old Dell Dimension 4100. Their seems to be some problems when I removed the RAM. I removed the RAM to clean off the access dust, inserted the RAM back and now the PC wont work. I dunno if I damaged the RAM or the motherboard. Anyway to tell. Ive unplugged everything except power supply, video card, and RAM. PC will power on, cds will light up, fans turn on, accesses HD, but I never hear any beeps or disk drive being read. Monitor wont turn on. Tried different video cards just to make sure When I remove the RAM, the computer will beep twice. Any ideas?