[Black Haze]

Right. So, issue I'm having is this. about 3 weeks ago. My power supply went out and when I replaced it. My graphic's card fan/Power supply fan and case fans all ran fine, but the CPU fan did not, and the LED Power button light did not come on. Also, my CPU fan isn't moving at all. Any idea's? I'm frustrated. I even replaced the motherboard in case that was the issue. The motherboard I replaced it with is 100% the same motherboard as the one I just took out. Still this issue is persisting. This has cost me quite a bit of money. If someone could help me. That would be amazing.

[Imada Duty]

If you can't spin the fan at all manually its probably fried. The lights probably come on to show the fan is working since you can't really run the machine with out that fan or with the fan broke its not completing its circuit. Are you sure your getting a good ground to the case. You didn't lose any screws for that mother board did you? What kind of computer?

[Black Haze]

Nah I didn't lose any screws. Also, there is no light for the processor. The LED light that my Power button has to the whole computer. Isn't coming on.

System spec's. Lenovo IdeaCentre K300. I replaced the PSU with a 600 watt PSU. A 1 Gig Nvidia GTX 550 Ti graphic's card. I replaced the ram for 8 Gigs DDR3 Dual Channel ram. 1330Mhz with metal casings.

[Dismas]

How many watts is your PSU? Do you know how many watts your components require? What's your CPU? I'd consider switching a new CPU in or getting liquid cooling to put on it.

[Black Haze]

The cpu is a 3.20 Ghz Duo-Core. Yes. Sadly it's a Duo-Core but it works. The PSU is 600 Watts. I just replaced my 550 Watt PSU with the new one in case it was he PSU.

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The bad news is. Last night, after re-attempting to fix the issue. Now all the fans only spin for about 1.8 seconds. Then go out....

[Dismas]

The cpu is a 3.20 Ghz Duo-Core. Yes. Sadly it's a Duo-Core but it works. The PSU is 600 Watts. I just replaced my 550 Watt PSU with the new one in case it was he PSU.

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The bad news is. Last night, after re-attempting to fix the issue. Now all the fans only spin for about 1.8 seconds. Then go out....

Well, I think you either need to get a bigger PSU or replace the CPU (which could be expensive). As I mentioned, you could also add a liquid cooling system in there. Not sure how many watts your computer is already taking. If you're sure that 600 is enough, then it's the CPU.

[Black Haze]

well the 550 watt psu I had worked fine for over a year. Now Ive upgraded to a 600 watt. Wouldnt that be better? I think its the processor too.

[Imada Duty]

You might not be getting enough power to all your systems(psu is faulty). Did you try running the processor with the stock components? You could have shorted out the CPU when you had it apart. Even static electricity can over load some circuits and if you grounded out a compasitor during the mod it could fry it. It wont turn on at all?