Gaming PC build not starting after working fine for a month

[xabcd123]

I built a gaming PC last month. Here are the specs:

- AMD Ryzen 5 1600
- MSI B350 PC MATE
- Corsair Vengeance 2x8GB DDR4-3000
- Samsung 850 EVO-Series 500GB
- Gigabyte GeForce GTX 1060 6GB
- NZXT S340 Elite
- EVGA SuperNOVA G2 650W 80+ Gold Certified PSU

Most of the time it's worked fine, with a few exceptions. The boot time to BIOS took about 27 seconds, which I understood to be a mobo issue. And once or twice the computer would take a few minutes to wake from sleep, rather than the usual ~20 seconds.

Today, it stopped working entirely. It turned off on its own and has failed to boot, even to BIOS, since then. The fans all spin -- case, CPU, and GPU -- and the mobo has a light on indicating a problem with the CPU, but I'm deeply skeptical since the CPU has worked perfectly for the past month and it's the mobo that's been behaving strangely.

I tried resetting the CMOS, but that didn't help. Neither did my attempts to start the PC with minimal attachments. I'd really appreciate any help. Thanks in advance.

 

[alexoiu]

If the PSU does provide power to the CPU and still red CPU LED, then I'd RMA both CPU and motherboard.

 

[xabcd123]

If the PSU does provide power to the CPU and still red CPU LED, then I'd RMA both CPU and motherboard.

Thanks for the response! I already put in a request to RMA through MSI. I'll send one in for the CPU too. By any chance do you have a recommendation for a mobo that might not have so many problems?

 

[alexoiu]

Not much feedback about Ryzen as far as I'm concerned, but you can check the recommendations here https://gpunerd.com/guides/best-am4-x370-motherboards-for-amd-ryzen
for B350 boards.