Help?

Just bought a new power supply for my computer because my old one stopped working. now everything turns on but i get no video from my Nvidia 9500 GT GPU or the integrated graphics. My cpu fan is running fast and i need more thermal on it. the computer wont turn off by itself and i need to flip the main switch. Is my power supply not working? Is it the lack of thermal compound on the CPU? Is it the motherboard, because of no integrated graphics?

specs:
Processor: AMD Athlon(tm) Dual Core Processor 4450e (2 CPUs), ~2.3GHz
Memory: 3072MB Kingston RAM
Video Card: NVIDIA GeForce 9500 GT
Operation System: Windows 7 Ultimate 32-bit
Motherboard: NVIDIA nForce 430
Power Supply: OCZ ZS Series 650W

Probably a bad PSU, that is what I think when I hear that fans are permanently out of control.

I thoroughly dislike OCZ, but a quick glance at the price of the PSU and it seems in line with a decent quality unit. You may want to try to get a replacement at the store though, or at least get them to put it in a similar setup computer and turn it on to make sure it works.

Not like your system is anywhere close to that taxing or anything, but it would be nice if they could prove at least some system will boot with it installed in one of their computers.

Did you take off the CPU cooler at any point during this process? If you didn't, I would just leave it like it is.

That all being said, I just want to let you know ahead of time that many times when an old PSU stops working, it causes something else to stop working at the same time. This happens most often when you hear a BANG, but that isn't the only time you need to worry.

Anyway, focus now on trying to prove the new PSU is good, we can worry about the rest afterwards. If you can't trust the PSU, you can't trust anything else in the computer either. We need to know how trustworthy that PSU is.

Also, I think OCZ PSUs tend to have multiple rails. You could be experiencing a load balancing problem. You might try taking out the SATA cables and re-engineering how you have then plugged in a few times. That could fix the issue.