No internet in Win 7

True.

Tell us if you still have problems that seem to have to do with the power supply. If you do though, maybe you got a faulty power supply, which is usually very unlikely.

That is 99.9% unlikely because I get the same result with two different power supplies.

Irunongames said:

When I turn on the computer it seems to be jump starting it's self, I hear the fan go from high low 7-8 times and the light on the on/off button dims and brightens when the fan get's slower. After this 20 second process is over it boots up.

That is not normal! It's also likely to damage some of your PC components. When was the first time it happened, and what do you think changed to make it happen?

It only happens when the 5750 is installed.

A quick look at the system requirements for a 5750 shows that a 450 Watt or greater power supply with one 75W 6-pin PCI Express® power connectors is recommended. My guess is if your current power supply had a single +12v rail instead of 2 you would be OK. I don't think you have the correct power supply to handle that video card. I'd bet money on it.