Thread: Windows wont boot

My computer was organization fine I left it on and went to work. I came home and it was off. it approaches on and will wait on day in bios but as rapidly as I attempt to run windows it shuts off. so I played with it awaiting I was booting from disc and that goes fine to reinstall pending it tries to begin windows then it shuts down again. I replaced hard drive and it does same thing. What is going on? Please help me to solve this problem.

The computer may be overheating. Open face board and observe if every fans are running. The computer should power off in case of overheating. It's also likely that power supply is reason of shutdown matter, depending on load from computer and age of power supply.