Just tried to upgrade my GPU and PSU, now my computer won't turn on. I think I have everything plugged in correctly. The mothe

Just tried to upgrade my GPU and PSU, now my computer won't turn on. I think I have everything plugged in correctly. The motherboard has a light that is coming on when I turn on the i/o switch but the power button doesnt light up and nothing happens when I try it.

I have a 2010 Dell Inspirion 580 with an 3.2 i5 and have upgraded the Nvidia GT 220 to a GTX 760 and the power unit to a Corsair CX750M.

Any help here would be awesome, I thought I could handle this but I have no idea how to troubleshoot
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More about upgrade gpu psu computer turn plugged correctly mothe
  1. power your pc and new graphics card with your old psu the corsair cx series allways have problems if the psu is the issue get aone like xfx or steelseries
  2. How do I know if its my psu that is having trouble? Is there a way to test it?
  3. well you just tried to upgrade your psu soo you should still have the old one , try if with that it boots if thats the issue refund your new one
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