Question HELP occational red CPU light

[OneandonlyDon]

Hey everyone im bringing this problem to see if i can get any answers... a quick run down of the problem im having is as follows.

My PC runs just fine.. no issues. until i turn it off and go to turn it back on.

i will get a RED CPU light and nothing on the screen. sometimes ill get it to display and no debug light.

but it freezes at the end of the spinning circle requiring me to restart.

it ALSO will just boot right in no problems... i have changed CMOS and reset it 100 times.

all my cables are well plugged in, including second CPU plug.

i have taken the CPU out to check the pins and everything looks perfect

CPU_FAN is plugged in no problems there.

ive checked all connections on the PSU side.

i have also tried all of my sticks of ram one by one in DIMM2 to no avail.

and i'm starting to not really know where to go,

i have also done a SFC /Scannow

came back with a corrupt file that it repaired and then the PC failed to boot again

i have rebuilt the PC but nothing changed, ive used this PC for 2 years now without this issue and i cant pinpoint where the issue started. all connections are tight.

also if i just spam turn the pc on and back off again eventually it will turn on for me

SPECS:
GPU : EVGA 3070
CPU : INTEL I7 11700K
PSU : CORSAIR 850 (MODULAR)
MOTHERBOARD : MSI Z590 A-PRO
RAM : CORSAIR VENGENCE DDR4 3600MHZ
AIO : CORSAIR H100 ELITE CAPPLLIX
OS : WINDOWS 11 24H2
SORAGE : NVME M.2 SAMSUNG 970 EVO

Not really a part but could be important the PC has strimmer v2 cables

any insight would be amazing thanks in advance!

 

[Lutfij]

Welcome to the forums, newcomer!

MOTHERBOARD : MSI Z590 A-PRO
What BIOS version are you on for your motherboard? If your motherboard is pending BIOS updates, flash to the latest version then clear the CMOS. In order to do the latter, disconnect from the wall and display, remove the CMOS battery, press and hold down the power button for 30secs to drain any residual power, then reseat the CMOS battery.

Not really a part but could be important the PC has strimmer v2 cables
Do you see the problem persist if you remove the cable extensions?

i have also done a SFC /Scannow, came back with a corrupt file that it repaired and then the PC failed to boot again
This might be an indication that your OS might need to be reinstalled after recreating your bootable USB installer for your OS. Speaking of OS, you forgot to mention the OS you're on and the storage in your build.

PSU : CORSAIR 850 (MODULAR)
Corsair is the brand of the PSU while 850 is the advertised wattage of the unit. You might want to include the model for the unit.

 

[OneandonlyDon]

Welcome to the forums, newcomer!

MOTHERBOARD : MSI Z590 A-PRO
What BIOS version are you on for your motherboard? If your motherboard is pending BIOS updates, flash to the latest version then clear the CMOS. In order to do the latter, disconnect from the wall and display, remove the CMOS battery, press and hold down the power button for 30secs to drain any residual power, then reseat the CMOS battery.

Not really a part but could be important the PC has strimmer v2 cables
Do you see the problem persist if you remove the cable extensions?

i have also done a SFC /Scannow, came back with a corrupt file that it repaired and then the PC failed to boot again
This might be an indication that your OS might need to be reinstalled after recreating your bootable USB installer for your OS. Speaking of OS, you forgot to mention the OS you're on and the storage in your build.

thank you for the heads up! my BIOS version is the most up to date

BIOS VERSON : 7D09v1A

i have not tried removing the strimmer's and i also cant seem to find any information on if they have ever caused a power issue. but i can try anyway

just tried a bios update but still no good (i wrote the most recent version over itself)

Edited post to include storage information

 

[DaleH]

It would be useful to measure the PSU voltage when the problem occurs and compare them to the readings during normal operation. Of couse you'd want a digital voltmeter for that.

 

[OneandonlyDon]

It would be useful to measure the PSU voltage when the problem occurs and compare them to the readings during normal operation. Of couse you'd want a digital voltmeter for that.

i have a multi meter (standard meter for construction or residential wiring work) if that would do the trick?

 

[DaleH]

i have a multi meter (standard meter for construction or residential wiring work) if that would do the trick?

A digital meter would be best, rather than analog. You cau use the pinouts shown on https://www.smpspowersupply.com/connectors-pinouts.html to check the voltages. Everything is dependent on the correct power, so it's good to eliminate or include the PSU as a source of the problem. Best way is to replace the PSU for troubleshooting purposes, but one doesn't often have access to a spare.

 

[OneandonlyDon]

i do have another one that is 500w and very old
could maybe try and hook it up

 

[DaleH]

i do have another one that is 500w and very old
could maybe try and hook it up

It might be worth a try, if the problem is resolved, then one can say that it was the problem. But if it remains the same, one might still wonder if that was because your spare was not good, also.