Hi There, I have just finished reinstalling Windows Xp, so my PC is clean of viruses & spyware. I have found that whenever I need to restart the PC that it just hangs on the shutdown screen and then the mouse freezes. I then need to press the reset button in order to complete task. If I need to shut the system down then that works fine. I have a Socket 478 AOPEN mobo, 80gb Western Digital Hard Drive, 256Mb DDR 400 RAM which I have already replaced. I have also replaced the IDE cable from the hard drive and removed the IDE from the FDD. I have an ATI VGA card AGP also I had a PCI 56k modem which I removed. Is it more likely to be a hard drive failure or a mobo failure. Any suggestion would be greatly appreciated.