So recently just bought a Ryzen 7 1700 to swap out my Ryzen 3 1200. Upon installing then flipping the power switch in the PSU on I noticed there was no light on the GPU, indicating there was no power in my PC. Even trying to turn my PC on through the big button on the front, nothing. I reinstalled the Ryzen 3 and everything powered up normally. I have a couple theories on why it's not working, one being I got it off ebay. The second being something wrong with my motherboard (MSI B350M Gaming Pro). If anybody can help it would be greatly appreciated.