souvik200

It was a bad CPU that was causing it, I put in a Ryzen 3600 and the problem is solved now! Took a long time to figure it out, swapped out many parts too. Hope this helps anyone with the same issue.

After searching a bit, I found that both the AMD and MSI service centers are close to one another. I will take it first to AMD, if they don't think its the CPU, i will take it to msi. I have also found a somewhat of a sure way of repeating this issue and that should help them i guess.

Its not a brand new CPU, its almost 1 year old.

Yes that is what I said in the original post, It works normally with game boost at 1.300V , I even tried with 3.9Ghz manual at 1.3V and still works fine almost all the time with almost no crashes. When I leave the voltages to auto and clocks to auto, then the problem starts occuring very frequently.

Which means the cpu is shutting down at anything below 1.300V (game boost fixed voltage) and isn't the cpu faulty?

When I did the DDU and reinstalled the AMD drivers again, I thought for once that the issue was resolved. Then I remembered that Game Boost was enabled in the bios. went into the bios, disabled it and boom, cpu debug led lit again after booting into windows.

Have you checked your CPU and GPU temps ?

Ok will try and revert back.

I used the amd removal tool https://www.amd.com/en/support/kb/faq/gpu-601, just yesterday though, because I had a fan curve gone wrong and the GPU fans would be stuck at max rpm in the optional update 20.5.1. Reinstalled the GPU drivers WHQL one after that.

I have tried both 1 stick and disabled xmp, both cases passed memtest86 (although tried for 30mins only) but gave me the red light as soon as I booted into windows to copy files to the usb stick to run memtest - both times. Cleared CMOS as per MSI support -- didn't help. Should ddu matter ? Reinstalled windows twice. No OC except for the game boost in bios, without which the cpu debug light thing happens anyways. (Game boost makes the cpu run at 1.3V and 3.85Ghz all core) which makes me think it is the cpu which is starving at lower voltages when game boost is disabled? I never had it enabled before though , only enabled it after I started getting this problem.

Yes as I have said I have tried the latest bios, pre - zen 2 bios and even a beta bios provided by msi support. Also reinstalled windows twice in the last month.

I have been having these weird problems with a R5 2600 and B450 Tomahawk, when booted to windows (mostly cold boots), my mouse cursor would randomly lock up, display would go black and then the cpu debug led would be lit on the motherboard and I would have to press and hold the power button to reboot into windows. First many suggested to change my psu which I did to a Corsair CX 650 - which didn't help solve the problem. So I contacted MSI support and they gave me a Beta bios for the mobo which also did nothing to fix the problem. Things I have seen / done so far: 1. I have re-seated both CPU and RAM 2. Changed the psu to a better one 2. Run memtest with no errors for 4-5 hours. 3. Enabled ErP ready mode in BIOS (maybe decreased frequency of the issue slightly but not sure) 4. Enabled Game Boost Mode in Bios - This gets an all core oc of 3.85GHz @ 1.300V. -- This helps quite a lot and the issue seems to go away almost entirely. 5. With game boost disabled, the issue persists almost every time i boot up. Also sometimes the cursor would lock up and then get fixed (sort of a hitch) and the pc wont turn off. 6. All CPU temps are normal even with game boost enabled -- 45C while gaming and 62C while running prime95 (small FFT) . I can either ask AMD for RMA or visit MSI RMA center. But I can't decide whether its the CPU or the motherboard that is faulty. Can anyone help me regarding this? Thanks for replying in advance :). System Specs: Ryzen 5 2600 MSI B450 Tomahawk (running latest beta bios provided by MSI support) Corsair Vengeance DDR4 3000Mhz (8Gbx2) Corsair CX 650 psu Sapphire RX 470 4G

I tried spreading the paste, it didn't help much, just shaved 3 degrees at idle (ambient also dropped so that might be the cause of the change), no change during load. I also saw that the thermal paste didn't have a uniform color, some places it was dark some places light, so I am guessing its the thermal paste that is the problem

I will try that tomorrow then.

I put a pea sized drop in the center and put the cooler on top to spread the paste. When I removed the cooler for the second time (to be double sure), I saw that the spread was nice and even but there was no spillage from the sides. I applied a slightly smaller sized pea as I suspected my initial application was too much but same higher temps after remounting.