Completely random pc crashing

[KumbaVW]

So suddenly my PC has developed tendency to crash at random, even most random things can trigger a crash, for example, when I'm playing a game and need to alt tab, bam crash, not BSOD, just my PC fully shutting down and restarting but not always, sometimes the white CPU LED comes up and i need to restart it again, now few days flew by and it was stable for some time, then suddenly when i tried to SCROLL on Roblox app for some games another crash. I checked the temps, not bad, PSU voltages are fine too, GPU under stress tests doesn't crash i ran multiple (Furmark, OCCT, Kombustor, AMD Built in one). It's seems so random, it's not always crashing under load (as for Roblox example) some games never crashed while other are crash happy like R6 Siege but it's still not always the same, i stressed my entire PC with OCCT and it held up no problems, no malware, windows reinstall didn't solve anything, Crystal Disk Info comes back with no issues on my 3 SSD's, GPU behaves normally on other systems and it's re pasted as well as the CPU, RAM testing did not return any errors, tried the event viewer and I even enabled dump files but still no one was being generated.
 

I'm starting to maybe guess my power is not clean as i live in an old old house in Europe and i have no UPS (cause it's expensive af) or any other surge protectors, can these actually help? Our grid is weak too, no auto transformers to even the voltage out, should i buy surge protector or it doesn't help and i need to save up for UPS
 

Specs:
CPU: Ryzen 3 3100 (No OC)
GPU: Radeon RX 5700 XT (on silent bios, oc bios doesn't change anything and it's flashed with new vbios)
Mobo: MSI B550-A PRO
Ram: GSKILL Ripjaws 32GB (2x16) 4000 MHz DDR4
PSU: SilentiumPC Vero L3 700W 80+ Bronze
Additional stuff: Sound card - Soundblaster Audigy RX

[Mark Kaine]

eh, basic troubleshooting, which in your case means get a proper power supply if you already know the grid is weak. 

the thing is its an ok system but the psu sounds sus... never cheap out on psu (sadly)

[Lurking]

A good wide range voltage PSU is a good start. Have your electrical system checked and fixed.

 

What measurements lead you to think electrical system is bad? Are you logging voltages at the receptacle? 

[KumbaVW]

3 hours ago, Mark Kaine said:

eh, basic troubleshooting, which in your case means get a proper power supply if you already know the grid is weak. 

the thing is its an ok system but the psu sounds sus... never cheap out on psu (sadly)

That PSU is not know that much because it's a Polish manufacturer and it's only selling on Polish market, my friend has the same one and it's behaving normally 

 

[KumbaVW]

2 hours ago, Lurking said:

A good wide range voltage PSU is a good start. Have your electrical system checked and fixed.

 

What measurements lead you to think electrical system is bad? Are you logging voltages at the receptacle? 

The psu is from 100 to 240V, I measured my voltage at 5 points in my house and it's sometimes upwards of 250V in summer when my neighbors are generating power with their solar systems (measured at no load in house) and in winter in cold evening there can be as low as 215V measured with no load on my own house 

[Lurking]

6 minutes ago, KumbaVW said:

The psu is from 100 to 240V, I measured my voltage at 5 points in my house and it's sometimes upwards of 250V in summer when my neighbors are generating power with their solar systems (measured at no load in house) and in winter in cold evening there can be as low as 215V measured with no load on my own house 

Solar inverters match the voltage and frequency of the grid. Your neighbors aren't causing this, your utility is.

 

Did you contact the utility? They sure want to know about problems.

 

On your end a UPS with wider range may help. 

[KumbaVW]

25 minutes ago, Lurking said:

Solar inverters match the voltage and frequency of the grid. Your neighbors aren't causing this, your utility is.

 

Did you contact the utility? They sure want to know about problems.

 

On your end a UPS with wider range may help. 

I tried contacting the utility but they said it's "normal" so yea, no help there, so you suggest to save up for a UPS?

[Lurking]

38 minutes ago, KumbaVW said:

I tried contacting the utility but they said it's "normal" so yea, no help there, so you suggest to save up for a UPS?

I think you should measure and log voltages in your house. If voltage is fine at service entrance, and lower at receptacle, your system is undersized.

 

Maybe a better PSU has a wider range for the 250V. A UPS also will have a voltage input limit. 

[KumbaVW]

22 hours ago, Lurking said:

I think you should measure and log voltages in your house. If voltage is fine at service entrance, and lower at receptacle, your system is undersized.

 

Maybe a better PSU has a wider range for the 250V. A UPS also will have a voltage input limit. 

Okay i will try to do that, and for now should i buy a power bar with a surge protection? Can it clean up the voltage spikes?