Question One memory module out of two undetected after SSD upgrade

[Etna]

Hi all, hope you're having a lovely day.
Before anything else, here's the specs dump of my patient for later:

- i7 11700K,
- Gigabyte Z590 Aorus elite ax,
- Crucial Ballistix 2x16gb ddr4 3200mhz cl16,
- Crucial T500 1tb,
- Gigabyte 3060 Ti,
- Corsair RM650x

Some background: my computer started having stability issues with XMP quite a while ago, but i always kept the problem at bay by simply not using XMP. Any modifications i did to voltage, timings and gear did nothing. My educated guess is a bios update with some wrong timing pulled a prank.

Now, another very odd issue: after i upgraded my old Crucial P5 with a newer Crucial T500, one stick of RAM gets detected as a 0gb, unidentifiable stick of ram, which is always the stick in the DDR4_B2 slot. Try to using just one stick leads to the pc not booting at all (stuck on RAM debug led). Swapping memory sticks changes nothing. Using another kit of DDR4 memory did nothing (2x8gb, same speed).

Here's what else i did so far:
- All the basics, disassembling and reassembling everything, spraying isopropyl alcohol, checking cables, checking bent pins... nothing changed;
- flashing bios, upgrading bios with q flash plus, booting with fast boot, setting the M2A_CPU (that is the CPU linked gen4 slot) slot to Gen3 speed... nothing changed;
- installing my P5 only in the M2A_CPU gen4 slot, installing my T500 only in the same slot, installing the same drive in the M2B_SB gen3 slot (linked to the chipset): the issue starts only with the gen4 ssd in the proper gen4 slot, and with the old ssd i can boot with just one stick.

Following the block diagram of my motherboard, the issue is located somewhere in the LGA1200 CPU circuit, and after fixing nothing with a RAM swap, my main suspect for now is i either cooked the CPU or the motherboard at some point.

I'm still about to test the PSU cables with my multimeter but i HARDLY believe that less than a 10 watts more on a 3 years old, 80+ gold rated PSU are the culprit. I'm also VERY afraid to try a CPU swap right now, because if my mobo is cooked it may kick in the head any CPU.
Oh, the Intel RTS on/off button is also gone now. Don't ask me why: i'm now clueless.

Is there something obvious i am missing? Am i disabled? Thank you for reading.

 

[Lutfij]

Welcome to the forums, newcomer!

flashing bios, upgrading bios with q flash plus,
For the sake of relevance, can you state what your BIOS version is at this moment of time?
after i upgraded my old Crucial P5 with a newer Crucial T500
Did you clear the CMOS after verifying your BIOS was flashed successfully?

my main suspect for now is i either cooked the CPU or the motherboard at some point.
How would you have cooked the CPU or board? How are you cooling the processor and what is the make and model of your case?

I'm leaning on your ram kit kit being faulty or failing or that the BIOS on the motherboard is lackluster or it's merely a compatibility issue with the T500 drive in your platform. It could also be an issue with the processor managing the memory as well as the SSD on your board. Can you drop in another processor to rule out your processor being the issue?

 

[Ralston18]

This motherboard?

Gigabyte Z590 Aorus elite ax

Do verify that I found the applicable User's Manual

= = = =

PSU;

Overall use and constant peak loads are more of a factor than chronological age.

PSU could be at or nearing its' designed in EOL (End of Life). Starting to falter and fail.

FYI:

https://www.lifewire.com/how-to-manually-test-a-power-supply-with-a-multimeter-2626158

https://www.lifewire.com/power-supply-voltage-tolerances-2624583

Any voltages out of tolerance are going to cause problems.