Question Computer randomly restarting frequently after new CPU installation

[rl2802]

I recently replaced my Ryzen 9 3900X with a Ryzen 9 5900X, and it was fine for the first couple of days, though I had only used it for a few hours each day. Today, it started spontaneously restarting every few minutes. The restarts are quick, I'm not getting any error or blue screens nor am I being prompted to examine something in the bios when it restarts. The shutoff are instantaneous, no freezing of windows or applications or anything beforehand, it just shuts off and reboots. I unmounted and remounted the RAM, I updated my Bios firmware, graphics driver, various device drivers and windows 10 itself, but the issue persists.

It almost seems like a power supply issue but I have a 1050 watt PSU which seems like more than enough power for my machine and it seems too convenient that it's only started happening since I replaced the CPU. I've had Core Temp open all day the CPU never even hits 70 degrees when the shutoffs happen, the fans aren't speeding up more than usual either so I don't think it's overheating. My next step would be going back to my previous CPU but before I waste much more time and thermal paste, I wanted to see if anyone else could think of what could be causing this or a solution I haven't tried yet.

Running Windows 10

Hardware Specs:
AMD Ryzen 9 5900X (previously Ryzen 9 3900X) (Noctua DH15s Air Cooler)
ASUS TUF GAMING X570-PLUS (WI-FI)
Nvidia GeForce RTX 3090
32 GB (2x 16GB) DDR4-3000 Memory
1TB WD Blue SN550 M.2 PCIe NVMe SSD (Boot)
1050 Watt Modular "High Power 80 PLUS Gold" PSU (Don't know the exact brand off the top of my head since this PC was built from order)

 

[punkncat]

Did you update your chipset drivers?

edit- go into Event Viewer, top two "tabs" and check for event ID codes.

edited edit-
When you did this, did you just power down, replace, power back up?
For something like this it is a good idea to reset CMOS prior to the removal of the old CPU, do the install, then reset things like XMP and whatnot. If you didn't and or don't know what I am talking about let us know

 

[rl2802]

Did you update your chipset drivers?

edit- go into Event Viewer, top two "tabs" and check for event ID codes.

edited edit-
When you did this, did you just power down, replace, power back up?
For something like this it is a good idea to reset CMOS prior to the removal of the old CPU, do the install, then reset things like XMP and whatnot. If you didn't and or don't know what I am talking about let us know

Yeah this is my first time actually replacing a CPU so I basically just updated bios, replaced CPU and then powered on. Do you have a resource you could point me to for going through those steps you mentioned?

 

[punkncat]

The first thing to do will be to go to your (Windows)"search" and type in "Event Viewer". The side panel should show the app. Click on that and wait a moment. The "Summary of Administrative Events" section will have a + sign next to "Critical" and "Error". Look in there and see if any event ID are showing, as they are system logged indicators of what is wrong, according to it.

As far as BIOS. Power system down. Cold start and spam the "delete" key (in most cases). It will open the BIOS. You can try to hit the default for CMOS and reboot. If you aren't aware, you can go back here later and enable faster settings for RAM, according to what is installed, but that is another thread.

Check back and let us know what you find.

 

[laviniuc]

try removing one of the ram sticks and check if the issue persists...
before that
check your 24pin and your cpu power connector, make sure they're properly seated
before that
check the power cable going into the psu, make sure it's fully seated (and on the wall)

L.E. check each cable on the psu and on the motherboard/gpu, i assume it's all modular, make sure nothing's slightly loose, check for loose screws that could be rattling inside the case, check that you didn't nick or strangled any of the cables when you swapped the cpu.

if everything seems ok or the issue still persists, take the cpu out, check for bent pins, plug the other cpu back in check if the same happens with the old one.

the psu could be just what you called it, highpower (sirtec) it's not a bad psu so shouldn't be your culprit

 

[rl2802]

Welp. I reset the CMOS and now I can't boot. The boot priority is set correctly but it's just giving me the "Reboot and Select Proper Boot Device" so I'm shifting my focus to fix that now. Will have to come back to the CPU problem after.

 

[drea.drechsler]

Welp. I reset the CMOS and now I can't boot. The boot priority is set correctly but it's just giving me the "Reboot and Select Proper Boot Device" so I'm shifting my focus to fix that now. Will have to come back to the CPU problem after.

In BIOS try enabling CSM operating mode, that disables UEFI mode. Your drive might be using MBR partitioning scheme and UEFI requires GPT.