I recently replaced a computer after it "died". what happenned was my mouse froze on the screen and I had no keyboard response. I held in the off button until it shutdown , but then when I went to reboot I had nothing going to the monitor. no signal at all. I tried the monitor on my other copmputer and it worked fine. I had no beeps during boot up and the hard drive ran continually. I have installed that harddrive in an external case and it seems to be working fine. I have scanned it and can find no virus's or anything on it. I had the power source checked and it was good. Could it be my mother board, video card etc etc. Any suggestions would be appreciated.