Computer won't shut down

[bruceb3]

I'm running windows 7 Pro. I was having random freezes and it turned out that my psu had a bad rail. Replaced it with an 850 watt single rail psu. When I try to shut down, it gets to the screen that says shutting down and goes no farther. I then have to use the power button to shutdown. It seems to have started after reinstalling a ghost image and then let Windows update. How can I figure out which update or what program is causing this? Thanks.

[kujoe2002]

back up everything (documents, music etc). Run a system restore - that would be my first recommendation. If you are really set on figuring it out, check your system logs under windows logs in management of your computer. It will list all the errors.

[bldegle2]

single rail??? what brand of PSU?.... most 'good' PSU's have at least two, many have up to four....

PSU's are nothing to be triffled with, you get what you pay for, a single rail 850w has to be some kind of off brand...

I apologise if I drew a wrong conclusion, but I have this feeling...

Laterzzzzz....

[James]

single rail??? what brand of PSU?.... most 'good' PSU's have at least two, many have up to four....
PSU's are nothing to be triffled with, you get what you pay for, a single rail 850w has to be some kind of off brand...
I apologise if I drew a wrong conclusion, but I have this feeling...
Laterzzzzz....

There was a craze a few years ago for single-rail 12v PSU's. the argument was having a single beefier rail will allow you to more intelligently use the 12v power you need, without having to worry about balancing between rails, or overloading one rail, etc. Many high end PSU's still offer single-rail PSU designs because of this. My PSU is also a single-rail design.

*Edit: For what it's worth, a single 12v rail PSU actually does not meet the newer ATX specs, which require multiple 12v rails as part of the spec.