Its not overheating its not the cpu Its not bad Ram I unhooked everything extra (1394 header and usb/diag header, and digital sound header) Mostly happens when i go to print. It'll print 1/4 of the picture/document thent he whole computer will just LOCK up. Has done this when scanning also, gets 3/4 of the way done and locks.. Sometimes just normal use will just lock it up too. Now i normally wouldnt ask for help, i manage a computer store with my dad, but sometimes, you just need other peoples help and opinions when something is baffling you Here is the specs on the system MSI k7n2 delta ILSR mobo AMD 1400 Athlon XP (running at 1402mhz) 256mb Kingston Hyper X 3200A DDR Ram WD 120gb main drive IBM 80 gb Music Storage Drive Asus 0402p/d dvdrw asus 1610a cdrw Enermax 3171 case with enermax 350watt PS ATI all in wonder radeon 7500 agp is the only add in card.