I got a new power supply! Not working

[Lodlike8]

I had to replace power supply because my old one had no PCI Cable for a GPU. When I got this new one I set it up, but when I turn on the screen, it does not display. Psu, CPU, and case fans running, but GPU fans not, I plugged hdmi into MOBO because I saw that GPU was not working. It was working with old psu, what should I do plz help I'm so stressed!

 

[EAJuggalo]

What are your system specs, and specs of both old and new PSUs?

 

[Lodlike8]

What are your system specs, and specs of both old and new PSUs?

AMD A10 7700k
Asrock MOBO
Seagate HDD 500GB
CD Drive ASUS
GTX 750 TI Geforce GPU
500W LEPA PSU (just bought an hour ago)

old one was allied 300W which worked fine but no PCI connetor so got a new 500W LEPA, I heard good on the brand, can you please try to help me!!!!

it turns on and all fans run except GPU (i need to run drivers of course) but no display? HDMI is plugged into MOBO and they are not loose. Should I reset CMOS? will that fix? Would that Wipe Windows 10?