My computer worked fine one night, but in the morning i went to turn it on and it wasnt working. I built my computer with a friend, i have a ibit IS7 motherboard and a pentium 4 processor. This happened once in 2004 and i took it to a computer repair shop and they would not tell me what they did, they just said they reset some chips and it worked fine. I already replaced that 3volt battery on the motherboard, i reset the jumpers on the motherboard, but im not sure if i did it right, cuz there are 4 of them. My fans turn on but my cd rom will not boot up and windows will not come on. I would love to just take it in to a computer repair shop again and help out in the circle of economy but i would like to figure this out on my own for future reference. Please if anyone could help me out that would be wonderful.