Hey i'm new here and i've had A computer for like 2 years and it used to work but once I left it alone for a month I went to turn it on and it didnt work.... the monitor just stayed black....i checked every cord and there all in and I think it has something to do with the motherboard(i barely know anything about computers at all).. the mother board is a KM4M-V/KM4AM-V/KM3M-V series micro ATX mainboard and thats all I could think of putting in but I have every bit of info on it so if u need more info on the machine I can tell u it. Any suggestions PLEASE HELP! Just remember I dont know a lot but I do know more than an average chuck