New PSU computer no longer booting

[AbsurdReference]

Hello! So in preparation for an RTX 3060 ti I ordered coming in a few days, I upgraded my PSU from a 550 W to a 750 W PSU. Originally, when I switched PSUs the new one seemed to work fine and I used the computer for about 2 hours (current build with old psu : 

PCPartPicker Part List

Type	Item	Price
CPU	AMD Ryzen 5 3600 3.6 GHz 6-Core Processor	Purchased For $189.99
CPU Cooler	Corsair H60 (2018) 57.2 CFM Liquid CPU Cooler	Purchased For $78.00
Thermal Compound	Noctua NT-H1 3.5 g Thermal Paste	Purchased For $7.99
Motherboard	MSI B450 TOMAHAWK MAX ATX AM4 Motherboard	Purchased For $84.99
Memory	G.Skill Ripjaws V 16 GB (2 x 8 GB) DDR4-3600 CL16 Memory	Purchased For $75.76
Storage	Samsung 970 Evo 500 GB M.2-2280 NVME Solid State Drive	Purchased For $86.59
Video Card	PowerColor Radeon RX 5700 8 GB Video Card	Purchased For $319.99
Case	Fractal Design Meshify C ATX Mid Tower Case	Purchased For $97.41
Power Supply	EVGA SuperNOVA GM 550 W 80+ Gold Certified Fully Modular SFX Power Supply	Purchased For $104.00
Case Fan	Noctua P12 redux-1700 PWM 70.75 CFM 120 mm Fan	Purchased For $13.90
Keyboard	Corsair K68 Wired Gaming Keyboard	Purchased For $59.99
	Prices include shipping, taxes, rebates, and discounts
	Total	$1118.61
	Generated by PCPartPicker 2020-12-05 19:13 EST-0500

new psu is Corsair CX750M 

However, when I shut down the computer and came back later, starting it up would have all the fans turn on and lights go on but the display would not detect an output. I tried reseeding the cables but the problem did not change.

Other things to note:

During the time I was on the computer I updated ryzen master and re set up an auto overclock

When I try to cycle the power the lights do not go off and the CPU error light on the mother board goes on for about 5 Ish seconds ( if needed I can time it exactly) 

My keyboard also seems to stay on now when I shut down the computer but do not unplug it which it used to not do 

any help would be greatly appreciated!

[IkeaGnome]

You didn't reuse cables from the EVGA did you?

[AbsurdReference]

5 minutes ago, Voluspa said:

You didn't reuse cables from the EVGA did you?

I did not, however after reseating the battery I was able to clear the CMOS (I previously wasn’t sure if I could because I didn’t see a jumper) and I’m now in the BIOS so I think I should have it fixed soon!