Computer will not turn on

I press the power button on the case. Nothing. The power button on the motherboard. Nothing. It is light up like it normally is. I had this working yesterday and it's been working for years. Now today it will not start. I changed out the CMOS battery, I reset the CMOS. If you can help thank you. Intel 3.5GHz Core i7-4770K NVIDIA DeForce GTX 760 SC 2GB GA-Z87X-UD7 TH Corsair RM Series RM650

submitted by /u/tonybeatle
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