i built this computer and its been working fine till 3 months late it went dead. i thought maybe it was the mobo. i replaced the mobe with the same kind (dfi matx) and still had the same problem. the prob is that the hard drive doesn't spin when the ide cables are hooked up to the mobo. when its disconnected from ide u can hear it firing up. no other hardware is connected. rams, power supply, hdd have been tested and working fine. can a bad cpu cause this? its a sempron 1.8 ghz.