Question MSI Pro B650-p not posting, CPU & DRAM LED's on

[Mizidi]

Motherboard: MSI Pro B650-p WIFI

CPU: Ryzen 7 7700x

RAM: G.Skill Flare X5 Series 32GB DDR5-6000 CL36

GPU: ASUS Dual GeForce RTX 4070



I built this computer over a year ago and have had no problems til recently.



Yesterday, the PC got stuck in a BSOD then restart loop (different BSOD's each time, often relating to memory or IRQL_ NOT_LESS_OR_EQUAL).



Only way I could get it to boot to windows again was by removing a RAM stick and using only one in the second slot. Tested both individually, no problem. However, as soon as I tried dual channel the computer crashed again. Using only 4th slot also caused immediate freezing when I tried to use memtest86 on it.



Decided to just keep it with the single stick which was fine all of last night but now today the computer will not post at all and the CPU + DRAM LED's stay lit. Tried leaving it on for 20 minutes to no avail.



Does this sound like it's the motherboard having problems? There were other issues that started happening right before all this too, such as the case fan RGB only working periodically (would stop being detected), occasional crashes, and one time the entire computer was lagging but no high usage showed up in task manager at the time other than WI-FI going a bit haywire.

 

[Darkbreeze]

Well, it definitely SOUNDS like a motherboard issue, but there's certainly other possibilities.

What is the EXACT model of your power supply and how old is it?

Assuming for now, until we can determine one way or the other, that the PSU is good, the first thing I'd do is remove the CPU and check for bent pins. The fact that you haven't had the CPU out recently doesn't necessarily mean anything. Sometimes a pin can get bent during installation but it's not bent enough that it immediately causes issues. Over time the weight of the CPU cooler, moving the system around, vibration or whatever can cause that to develop into a problem that it didn't seem to have before so it's always good to check.

If the CPU or motherboard (Depending on the platform and socket type) pins are ok then the next thing you'd want to do is bench test it using minimal hardware to eliminate the possibility that it's something else like a short somewhere, screw behind the motherboard that got trapped during installation and has finally worked it's way through the conformal coating and is shorting one of the traces, faulty component, connector that has worked itself loose, etc.

How To - Motherboard bench testing

Finding the problem through bench testing If you are here then it’s likely you have encountered a serious hardware issue and have been unable to resolve it using the standard no-POST troubleshooting procedures. If you have not yet attempted to resolve your issues using the no-POST...

forums.tomshardware.com

 

[Mizidi]

Well, it definitely SOUNDS like a motherboard issue, but there's certainly other possibilities.

What is the EXACT model of your power supply and how old is it?

Assuming for now, until we can determine one way or the other, that the PSU is good, the first thing I'd do is remove the CPU and check for bent pins. The fact that you haven't had the CPU out recently doesn't necessarily mean anything. Sometimes a pin can get bent during installation but it's not bent enough that it immediately causes issues. Over time the weight of the CPU cooler, moving the system around, vibration or whatever can cause that to develop into a problem that it didn't seem to have before so it's always good to check.

If the CPU or motherboard (Depending on the platform and socket type) pins are ok then the next thing you'd want to do is bench test it using minimal hardware to eliminate the possibility that it's something else like a short somewhere, screw behind the motherboard that got trapped during installation and has finally worked it's way through the conformal coating and is shorting one of the traces, faulty component, connector that has worked itself loose, etc.

How To - Motherboard bench testing

Finding the problem through bench testing If you are here then it’s likely you have encountered a serious hardware issue and have been unable to resolve it using the standard no-POST troubleshooting procedures. If you have not yet attempted to resolve your issues using the no-POST...

forums.tomshardware.com

My bad, forgot to include the PSU! It's the CORSAIR RM850 (2021) series. I got it around the same time as the rest of the parts, so ~August of 2023.

I reseated the CPU and noticed no damage to either it or the pins in the socket. Still experiencing the same problem.

I will try bench testing it tomorrow as well as possibly swapping out the RAM just in case. Hopefully that'll help pin down the problem as well as I can.

Thank you!