PC doesn't consistently boot

misuwu · May 14, 2022

I recently bought a second hand Ryzen 7 3700x. When I received it I put it my system with my old stock 1300x cooler (while I was waiting for my new one) and I ran Cinebench on it with hwmonitor to see if the temps rise too much. After 15 minutes it started to touch 90 degrees and closed Cinebench to let it cool off. The CPU worked fine

I recently bought a second hand Ryzen 7 3700x. When I received it I put it my system with my old stock 1300x cooler (while I was waiting for my new one) and I ran Cinebench on it to test it with hwmonitor on to see if the temps rise too much. After 15 minutes it started to touch 90 degrees and after a few minutes I closed the pc. The CPU worked fine.

The next day, when the new cooler arrived i mounted it and the PC powered on, all the fans were spinning, but no video output. Holding the power button down didn't shut it off. I flipped the PSU switch and one by one I reseated the gpu(also tried the other pcie slot), ram and reset the CMOS. All of these things didn't seem to do anything. When I was playing with some ram configurations the PC powered on but after around half an hour it got in the state of blackscreen with fans spinning. I reseated the CPU and got it to boot a few times but not for long. Every time I stressed it it shut down. On some boot attempts I got into the bios and the PC never blackscreened while in it, but every time the CMOS got reset(the CMOS battery voltage is 3.3v). I put in my old Ryzen 3 1300x and it worked perfectly. I get no error codes on my mobo.

Now I am trying to figure out if I partially broke my CPU or my mobo.

No CPU pins are bent or missing from what I saw.

I think I might have killed one of the vrms and now the mobo can't withstand the higher power draw.

PC specs:

Mobo: gigabyte GA ab350m gaming 3

CPU: 3700x upgrade from 1300x

GPU: 1050 2gb

Ram: 2 sticks Corsair vengeance RGB pro 8gb 3200 MHz and a stick of hyperx savage 2400mhz(while testing I only ran the latter)

PSU: rm1000x

If the build seems weird it's because I want to upgrade the gpu and mobo in a few months.

The PC is almost 5 years old.

DrMacintosh · May 14, 2022

53 minutes ago, misuwu said:

Every time I stressed it it shut down.

I highly suspect the power supply. How old is it? When I was having boot issues, I narrowed it down the the power supply. Since changing it, I've never had booting issues or black screens since with fan spin since.

misuwu · May 15, 2022

24 minutes ago, DrMacintosh said:

I highly suspect the power supply. How old is it? When I was having boot issues, I narrowed it down the the power supply. Since changing it, I've never had booting issues or black screens since with fan spin since.

The PSU was bought half a year ago. I will try to use my old PSU. Maybe this one is faulty but i doubt it because Corsair probably has pretty good QC.