So, my pc keeps shutting down randomly. PSU IS corsair rm850x shift. It started this issue after about 10 days of use.
Now, the first time it happened, i gave it a break for about 16 hours, then turned of my pc. It started working, but this time i kept an eye on PSU voltages on hwinfo64. What happened is that it worked well for about 3 hours, then the (+3v) avcc voltage kept going down by about 0.016v per half an hour or so. Then from the initial value of 3.312 it reached around 3,056, then all of a sudden pc shut down (after running it for about 5.5 hours)
Then again I gave it a break for about 12 hours. In the morning i booted it up, immediately noticed on hwmonitor that this time the initial avcc voltage is 2.264 to begin with. This time the voltage kept dropping by 0.016v rather more quickly than befire, and pretty soon it reached the value of 3.056, and a few seconds after, the pc shut down (after running for about 2.5 hours)
This was my hwinfo64 readings during shutdown:
Avcc 3.056 (or lower)/ 3.312
3vcc 3.296/ 3.312
5v : 4.960 (sometimes 4.880)
12v: 12.00v
3vsb 3.056 (this one kept following the avcc value more or less)
Vbat: 3.1+ as far as i remember
I think my psu is faulty. Can someone shed some light on what this avcc voltage is and what it does? Most of the time i just hear about the 12v rail voltage, which looks fine in my case, but the pc shuts down as the avcc reaches a critical value, crossing the acceptable 5% deviation from standard value.
I am not the most knowledgeable person on PSUs. Your help and guidance will be appreciated.
My specs:
Ryzen 5800x cpu
Radeon 6800xt gpu
16gb ddr4 ram
Corsair h100i 240mm liquid cooler
Msi mag x570 tomahawk wifi mobo
6 montech cooling fans
Corsair rm850x shift 850w psu
I dont overclock anything. I also keep my ram xmp disabled.
Now, the first time it happened, i gave it a break for about 16 hours, then turned of my pc. It started working, but this time i kept an eye on PSU voltages on hwinfo64. What happened is that it worked well for about 3 hours, then the (+3v) avcc voltage kept going down by about 0.016v per half an hour or so. Then from the initial value of 3.312 it reached around 3,056, then all of a sudden pc shut down (after running it for about 5.5 hours)
Then again I gave it a break for about 12 hours. In the morning i booted it up, immediately noticed on hwmonitor that this time the initial avcc voltage is 2.264 to begin with. This time the voltage kept dropping by 0.016v rather more quickly than befire, and pretty soon it reached the value of 3.056, and a few seconds after, the pc shut down (after running for about 2.5 hours)
This was my hwinfo64 readings during shutdown:
Avcc 3.056 (or lower)/ 3.312
3vcc 3.296/ 3.312
5v : 4.960 (sometimes 4.880)
12v: 12.00v
3vsb 3.056 (this one kept following the avcc value more or less)
Vbat: 3.1+ as far as i remember
I think my psu is faulty. Can someone shed some light on what this avcc voltage is and what it does? Most of the time i just hear about the 12v rail voltage, which looks fine in my case, but the pc shuts down as the avcc reaches a critical value, crossing the acceptable 5% deviation from standard value.
I am not the most knowledgeable person on PSUs. Your help and guidance will be appreciated.
My specs:
Ryzen 5800x cpu
Radeon 6800xt gpu
16gb ddr4 ram
Corsair h100i 240mm liquid cooler
Msi mag x570 tomahawk wifi mobo
6 montech cooling fans
Corsair rm850x shift 850w psu
I dont overclock anything. I also keep my ram xmp disabled.
Last edited:
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