[SOLVED] Computer not posting to screen, motherboard CPU light is on

[tonitonirocca]

The situation:
I moved cases (all same hardware!) and my MSI Z270I Gaming Pro Carbon now has a CPU light on it (which i'm not completely certain it didn't before) and it won't post to screen.

CPU fan, sys fan, and gpu fan all run, and the ram detected lights are both on.

Things I've tried:
1. Removing the GPU and plugging in to on board video, same effect
2. Removing ram, using 1 stick of other ram in either slot, same effect in both cases
3. Unplugging the cpu power cables, same effect
4. reseating the cpu, checking for bent pins, etc.
5. Using a screwdriver to reset the CMOS using the cmos jumper pins (seeemed to work because the machine wouldn't power while I had those pins connected, and powered after i didn't)

Notes: The CPU has never gotten hot, ever, I specifically run it very cool because I care about longevity more than fps. I don't use the computer that often nor do i play anything very graphical anyway. I've had the computer for about a year and change (the motherboard's warranty ran out in august)

Things I'm looking to try:
1. Using a multimeter to check the psu's cpu power cables
2. Using a MM to maybe check some of the cpu vrm chips or capacitors, if I can look up how-to on that
3. bake my dang motherboard
4. throw my motherboard into lava and buy a new one

 

[anotherdrew]

If the CPU debugging LED comes on and stays on that means your CPU has failed the self-test. That LED is one of 4 near SATA 3 and 4.

Since all you did was move cases, I would first check if the motherboard is being shorted out by a stand-off in the wrong place or screw that caught underneath. I doubt this is a power issue. The lava idea might work ... well ....

 

[Calvin7]

Resetting the CMOS while the power is still connected to the wall socket can damage the motherboard.

 

[tonitonirocca]

If the CPU debugging LED comes on and stays on that means your CPU has failed the self-test. That LED is one of 4 near SATA 3 and 4.

Since all you did was move cases, I would first check if the motherboard is being shorted out by a stand-off in the wrong place or screw that caught underneath. I doubt this is a power issue. The lava idea might work ... well ....

Oh good call on the standoff etc issue though I did move the motherboard to reseated the CPU so no deal there. I actually don't know if I tried it completely outside of the case so I should give that a try before the lava bit

 

[tonitonirocca]

Resetting the CMOS while the power is still connected to the wall socket can damage the motherboard.

good to know, though the behavior was identical before and after I did it so I guess I was lucky, I'll know that for the future tho