BSOD - Tried everything I can think of

Hey everyone, really struggling with a BSOD issue on my LCD Steam Deck. I turned it on the other day and it was just a black screen and the fan spins really loud. I can feel the adaptive feedback on the touchpads too.

I've done so much searching, tried every possible button combination that's recommended, tried the battery drain method, tried unplugging everything except just the screen to no avail.

The power LED only comes on while charging and confirming no output to an external monitor. It seems bricked

Suspecting a cooked BIOS, I did a hardware BIOS flash using a CH341A programmer. I used this link as a guide

https://youtu.be/IE5ziAT6Mn0?si=qs9Dx88u...

Did it two times but still doing the same thing. I thought it might be an APU issue, not sure how to test but I took the heat sink off and confirmed it got warm (before turning it off before it got hot) so there should be power going to it

Not sure how to test the RAM..

My motherboard is the F7AA version, I have a suspicion that using the link above to flash is for the older F7A variant. I haven't been able to find a specific BIOS for F7AA motherboard

I'm honestly at my wit's end with this. Any ideas or help will be greatly appreciated!