Sudden shutdown. PSU not enough?

[Hesper]

Hi. My PC has been randomly shutting down, not restart, just powers off.

 

My current setup
OS: Windows 11 Pro 64-bit

BIOS version: 7B07v3E

Motherboard: MSI A320m Pro VH Plus

CPU: Ryzen 5 2600 (stock speed, stock cooler)
GPU: Zotac RTX 3060 Twin Edge OC

RAM: 2x8GB Kingston

Storage: 1x4TB Seagate 3.5 HDD, 1x1TB WD 3.5 HDD, 1x120GB Sandisk SSD

Fans installed:

front: 3xArctic P12 RGB 120MM (RGB daisy chained connected on JLED header of the board), power is daisy chained to one end of a 3-way splitter on the SYS_FAN (connection is like this: fan>fan>fan>1 end of splitter>sysfan header)

top:  2xPhanteks MG 140MM (no rgb), connected on the other 2 ends of the 3 way splitter for SYS_FAN

back: 1xTecware fan included in the case, connected via molex from psu

PSU: Seasonic M12ii EVO 620W 80plus bronze

Happened 3 times now, last it happened 2 hours ago, (9AM GMT+8)

I just got the 3060, previously using 1660 Super (never had sudden shutdowns). I did a clean install when I install the latest driver from nvidia

Last night I tried running Furmark and OCCT to stress test cpu and gpu at the same time for 15 minutes. CPU temps at 91C, GPU temps at 75C, no crashes.

Tried running Heaven and Valley benchmark, same temps as Furmark, no crashes.

Tried running sfc/scannow, no errors found, restarted, running dism restorehealth, restarted, still happened earlier.

CrystalDiskInfo and HDSentinel reported 100% on both HDDs, SSD at 73%, tried checking errors with HDTune on SSD, no errors. 

 

Apps running while it all happened: installing a game from a certain "girl" repack, downloading another using torrents. (installing and downloading on the 4TB HDD)

don't know what else to try. is it the fan setup? is the rtx 3060 too much for the PSU? some people told me the wattage is enough for my setup. is the HDD failing? or it cant handle 2 activities(installing and downloading at the same time)? is my windows corrupted? gpu driver need reinstalling? 

 

I'm planning to reapply thermal paste and install a fan hub for all the fans when I clean the pc this weekend (it's not dusty af but i like to clean it every couple of months)

[Entropy.]

14 minutes ago, Hesper said:

Hi. My PC has been randomly shutting down, not restart, just powers off.

 

My current setup
OS: Windows 11 Pro 64-bit

 

Unless the PSU's wattage rating isn't indicative of what it can actually handle... or something like power transient (spikes) make it go batshit... I don't see how that could happen. However, I'm not exactly the foremost expert on the front of power supplies, just what I know. 

[Hesper]

2 minutes ago, Entropy. said:

Unless the PSU's wattage rating isn't indicative of what it can actually handle... or something like power transient (spikes) make it go batshit... I don't see how that could happen. However, I'm not exactly the foremost expert on the front of power supplies, just what I know. 

Same thought, someone told me that if the psu trips due to a power spike, i should have to press the switch at the back of the psu to turn it on again. if that's true, that never happened so im guessing its out of the question

[Moonzy]

2 hours ago, Hesper said:

CPU temps at 91C

this is slightly concerning, but meh

 

that PSU wattage should handle the setup fine, but that particular PSU model is group regulated or something something, might not handle the power spikes of 30 series that well

but you do have a ton of headroom in term of wattage so -shrug-

[TrigrH]

an fg repack is a heavy decompression workload, sounds like your CPU is overheating, you could try under-clocking it to get through the task.

[191x7]

3 hours ago, Hesper said:

...

 

My current setup
OS: Windows 11 Pro 64-bit

BIOS version: 7B07v3E

Motherboard: MSI A320m Pro VH Plus

...

 

First, that.

 

Second, the CPU temperatures <=> those relate to the VRM temperatures -> on that board it might trigger the VRM protection - a hard shutdown - sometimes followed by a slow CPU cooler fan on next startup (noticed a lot on older MSI AM3 boards, not sure about AM4).

 

Cool the CPU down. And cool the VRM.

In fact, I'd recommend changing the motherboard.

[Hesper]

2 hours ago, 191x7 said:

 

First, that.

 

Second, the CPU temperatures <=> those relate to the VRM temperatures -> on that board it might trigger the VRM protection - a hard shutdown - sometimes followed by a slow CPU cooler fan on next startup (noticed a lot on older MSI AM3 boards, not sure about AM4).

 

Cool the CPU down. And cool the VRM.

In fact, I'd recommend changing the motherboard.

Oh, then I guess I'll see if it will improve this weekend when I clean the pc and reapply thermal paste. CPU temps while gaming are at 76-80C. It's summer here so ambient temps are higher too, 29C according to our weather forecasts, I have AC but I try not to use it since electricity costs are high af.

[Hesper]

UPDATE: Flashed BIOS update, and re-enabled TPM in BIOS because for some reason, it was disabled even though I'm running Windows 11. Tried finishing all downloads first before installing fg repack, enabled the limit on the installer. success, no crashes happened. I will still reapply thermal paste and install the fan hub this weekend. Will post a reply if it happens again or not.

 

UPDATE 2: just happened again while I was reading manga, guess it's going down between SSD, motherboard and the PSU.

[Hesper]

UPDATE 3:

Tried undervolting/underclocking GPU, ran heaven benchmark 5 times, ran furmark for 35 minutes, no crashes. 

PC seemed stable, tried installing FG repack, pc crashed. Tried installing again but monitored temps using HWMonitor and GPU-Z, PC crashed, last CPU temp I saw was at 62C, GPU at 47C. So I think GPU power spike isn't the cause.

 

Replaced the SATA cable for the 4TB HDD(this is where I install and download files),also ran dskchk /f /r on it before sleeping.

woke up pc still running, tried installing FG repack, installed successfully. tried downloading another repack while installing another at the same time, no crashes.

 

Guess SATA cables were the cause. Bought replacements for the other storage devices and a few extras for backup.

 

I still cleaned the PC and reapplied thermal paste, OCCT CPU stress tests are now at 85C max, gaming at 62-68C (around 50+ to 60C if I have AC on)