[Solved] Random Shut Downs

[Worstcaster]

CPU: Ryzen 5800x

GPU: Zotec 3070 ti

MOBO: Gigabyte B450 Aorus Pro Wifi

Ram: Corsair Vengeance 3200 32 GB

SSD: Sabarent 2 TB

Power Supply: Corsair 850 W 80+ gold 

 

I just updated my CPU and GPU about 2 weeks ago (Return window closed Thursday).  Yesterday the computer shutdown randomly while my son was playing Fortnite.  Today it shut down on me while playing Dragon Quest 11.  I was monitoring temps because of the shut down yesterday and everything was fine (All temps CPU and GPU in the 60 C range).  When it does crash everything shuts off (case fans, cpu cooler fans, GPU, and RGB).  The only things still on are white LEDs on the case and power button.  The power button will not reboot.  I have to throw the main power supply switch on the back and turn it back on to activate the front power button.  When I do this the CMOS resets (this has always happened when I unplug the PC though).  Everything was doing fine until yesterday.  I am on the latest Nvidia drivers (just updated this morning, so yesterday's shutdown was on last month's driver).  I also updated the AMD chipset drivers this morning.  The BIOS has been on the latest Gigabtye version since the update 2 weeks ago.  No unusual sounds or smells.  Since everything is shutting off, but power is still getting to the case LED and power button LED, I'm leaning towards too much messing around with the MOBO recently is causing it to fail.  Thoughts?

[WaterSheep]

Please check the "Event Viewer"

[GuiltySpark_]

16 minutes ago, Worstcaster said:

  The power button will not reboot.  I have to throw the main power supply switch on the back and turn it back on to activate the front power button. 

Most of these threads with similar issues don't have this happen and this right here is a key to the problem.

 

If this is happening, a likely scenario is the PSU (which with your system should be perfectly fine, more than enough) is somehow tripping its OCP (over current protection) or one of its multiple protection failsafes. 

 

Reboots while using the PC where it just restarts on its own are usually blamed on the PSU but true OCP tripping issues are usually followed by the PC completely shutting down then having to turn the PSU off then on again to get the PC to boot. 

 

I strongly believe that because of that very specific clue you included that there is something up with your PSU. Could just be faulty, entirely possible even with quality units. 

[Worstcaster]

It could be.  The PSU isn't a new part though.  It was installed last August in the hopes GPUs would be available at that time and hasn't had any problems until now.  I do still have a Corsair 80+ bronze 650 I could try, but I don't know if the new CPU and GPU would over power it.

[Worstcaster]

44 minutes ago, WaterSheep said:

Please check the "Event Viewer"

What am I looking for?  I saw a critical error, that I assume was post failure, because it says the system was not shutdown properly.  I'm not finding anything that looks very specific though.

[Worstcaster]

Additional note - I ran mem test and the RAM came back as fine.

[GuiltySpark_]

Just now, Worstcaster said:

What am I looking for?  I saw a critical error, that I assume was post failure, because it says the system was not shutdown properly.  I'm not finding anything that looks very specific though.

If you're PC is shutting down abruptly, you're not going to see anything in Event Viewer, that was not a great suggestion. 

 

PC's shutting down (not soft rebooting) and requiring you to cycle the power switch on the PSU indicate a PSU specific problem. 

[Worstcaster]

Ok, I just got off the night shift, so I will try installing the old 650 W PSU after I get up and see if that solves the problem.

[Worstcaster]

@rickeo I switched out the PSU.  The system seems to be running fine on the 650 W.  All long as it doesn't shutdown in the next few days that seems to have solved the problem.  Thanks for your help.  I seem to have bad luck with PSUs.  The 650 that is in the system now was a replacement for the 550 W Cooler Master that I originally built the system with.  The Cooler Master PSU released the magic blue smoke.

 

Edit: I got a shutdown with the 650 W PSU as well.   Now the PC won't turn on at all.   I'm back to thinking MOBO.

[Worstcaster]

Changed MOBO, upgrading from B450 to B550.  Running for about a week without shutdowns.  Thanks to everyone who responded.