Hello!! I recently put a new power supply in a Dell computer for a coworker, and the machine booted up fine for me and ran well. When he took the computer back home, he was able to use it for several hours, but the next day when he got home from work the machine would not boot up again.
The new power supply was rated exactly the same as the old one, could the system have a virus that is causing this to happen?
He is supposed to be bringing me the computer back so that I can play with it some more, and this time he is going to bring all of the software in case I have to reformat the hard drive.
Thank you in advance for your help!