steviemaximum

Shoot, I forgot to put the PSU in the OP! It's the EVGA 700B Bronze. I don't have another AM4-based PC I can use, unfortunately. Is there somewhere I could bring the CPU and have them test it on an AM4 board?

I got a new motherboard because I figured that it was causing the problem, as well as that I was able to get one for free. But apparently the motherboard wasn't the problem because nothing changed; it didn't POST and I got the same LED error code.

Hi guys. I built a PC in May of this year, which had been working fine until a few days ago. I left it on while I went out, and when I came back a few hours later, the PC was off. I tried booting it back up, and the fans came on and the mobo lit up, but there was no POST. The light on my backlit mouse came on for half a second and then went out. On the MSI mobo, the EZ Debug LED for CPU came on for five seconds, then went out for around ten, then came on for another five, and so on.I figured the problem was either the PSU, mobo, or CPU. The PSU seems to be fine, as I used a multimeter to find that all the voltages were good in the connectors. I then got a replacement mobo (same model) at MicroCenter, and I'm having the exact same issue. I've tried breadboarding, clearing the CMOS, and testing with one RAM stick in each slot, with no success. Everything seems to point to the CPU being the problem, but I've read that CPU failure is extremely rare.According to the Ryzen Master app, my temps were around 50-65 degrees Celsius while idle, but apparently it reports temps as being 20 degrees higher than they actually are, so my temps were actually less. Also, not sure if this is CPU-related, but I noticed that randomly, applications (whether it be Chrome or Skyrim or whatever) would completely freeze for like 10-20 seconds and then function as normal.Any help would be greatly appreciated.My parts:Motherboard: MSI X370 Gaming Pro CarbonCPU: AMD Ryzen 7 1700xCPU cooler: Noctua NH-L9x65 SE-AM4RAM: G.SKILL 16GB (2 x 8GB) Ripjaws V Series DDR4 PC4-19200 2400MHzGPU: Gigabyte GeForce GTX 1060 WINDFORCE OC 6GSSD: PNY 240GB CS1111 internal 2.5 inch SATA III Value Solid State Drive PSU: EVGA 700 B1 100-B1-0700-K1 80+ BRONZECase: IN WIN GT1 White SECC Steel ATX Mid Tower