Compy wont turn on (amber light)

I was fiddeling around my my computers graphics yesterday, trying to see what I could do about installing a new one that I go in the mail a few days back, and now the thing wont even turn on. All I get now is a yellow light instead of a green light on the power switch. I've tried unplugging the power supply and leaving it off over night, but it still wont turn on. What can I do?

go back into your computer, unplug everything, and plug it back in properly.  repeat.

replace your motherboard and the case.

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