Ryzen PC build won't post

[JDevil]

Hey guys, my buddies new PC build won't post/won't allow us to install windows off boot drive. We thought it was the mother board so we swapped it out, but still no luck. RAM tested in another PC, have not tested GPU in another machine yet, we have a feeling it's the CPU. The PC gets to bios, we choose to boot off windows boot usb drive, and then it shows the windows 10 logo splash screen, gets the spinning cirlces for about 3 seconds then just goes to a fatal error screen, trys to reboot, has a different error, does this loop about 3 times then kicks back to bios.

I've taken the hard drive out and installed windows on it with the same boot media in a different PC and it worked fine. Slotted that hard drive back in the New PC and it booted to windows 10, worked for 10 minutes then failed and won't go back into it. PLEASE HELP LOL this is incredibly frustrating, we've been trying everything we can but we don't have another AM4 pc handy to test the CPU in.

Don't have full specs handy, only CPU and Motherboard are acurate, otherwise I know rough brand and type, but not exact productSpecs:
AMD Ryzen 7 1700
Original motherboard: ASRok AB350 Pro4 ATX
New Motherboard: ASUS PRIME B450M-A mATX
MSI GTX 1080 
Corsair 16gb x1 stick
Kingston 120gb

I can get the rest of the specs soon!

ANYTHING WOULD HELP THANKS