Windows 10: PC Randomly Restarts with no warning and under no load

Hi All,My PC randomly restarts, and I cannot figure out why.Happened right now from a cold start this morning, was in an idle state while I was drinking coffee and looking at my phone. No apps running.Event viewer was no help, typical metadata staging & COM errors. No event at all of the unplanned shutdown/restarts.This build is 2 weeks old with all updates completed.Build:AMD Ryzen 9 7950xASUS PRIME B650M-A IITrident Z5 2 x 32GB 6000Mhz CL30 - Running at stock 4800 MHz – no EXPO EnabledT-FORCE Cardea Z540 2TB m.2 in PCIE 5 Slot with aftermarket heatsink.AMD 5700XT GPUDeep Cool Assassin IV

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PC is randomly restarting without any warning

I also facing same problem the PC is randomly restarting without any warning , even though my PC is fully updated still facing it what can i do

 

PC Randomly Restarting after installing new Ram!

Tried your suggestions, but still had a restart! Also ran memtest overnight (13 hours according to memtest) and had no errors! Also ran Passmark Burn in test for a couple hours testing everything and had no errors or restart. Could fitting the new ram have triggered something to go bad like my mobo or psu?

 

PC randomly restarts when not loaded (no BSOD)

The problem

PC randomly restarts when lightly loaded (doesn't even need to boot into OS, sometimes restarts while in UEFI). Give it something to do and boom, no problem. Currently running Prime95 on one core so it doesn't restart.

Looks like my PC just doesn't tolerate boredom. Or likes being a radiator.

The specs

• CPU: Ryzen 5 1600
  
• MOBO: Gigabyte AB350M-DS3H
  
• GPU: Asus GTX 1050Ti
  
• RAM: Goodram IRDM 2x8GB 2400MHz
  

All above are factory new. PSU and drives moved from old computer.

• PSU: Chieftec CTG-450-80P
  
• Main drive: OCZ ARC100 240GB
  
• OS: Win 10 Pro
  
• Other drives: WD Blue 500GB SSD, two Seagate 500GB HDDs
  

The things I've tried

• Checked temperatures when idle and under heavy load - perfectly normal
  
• Checked power plan settings, set all of them manually to favor high performance
  
• Ran Memtest just in case - no errors
  
• Checked voltages on a multimeter (also during crashes) - perfectly stable and within desired ranges
  
• Disabled "Cool&Quiet" in BIOS (supposed to lower CPU voltage when idle to save energy and lower heat dissipation)
  
• Manually setting multiplier to standard frequency, and voltages to what they averaged to while stress testing with Prime95
  
• Stress tested with Prime95 and Furmark simultaneously to check for PSU-related issues, as well as general stability issues
  

All that to no avail, save for the "cool'n'quiet" thing - restarts are a little bit less common with it disabled. The issue, though less frequent, remains unresolved.

Though it doesn't look like a PSU-related issue, unfortunately I don't have another one handy to test it, save for some 200W old ones.

Same goes for pretty much every other component on board.

Any ideas?