DRAM LED solid red, no POST, no beeps when running without memory (on 4.5 year old PC)

[ranchduboise]

Aloha. Recently I started having two Chrome tabs open along with a few FireFox tabs loaded with extensions. This caused my memory usage to hit ~96%. Yesterday a few minutes before the time of writing this I opened Chrome twice, didn't open for a minute then my computer crashed. I tried turning it on again yet to no avail and now I have the problems written in the title. My motherboard is an ASUS Z79 Sabertooth

I have tried;

-attempting CMOS to settle outside of mobo then reseat it

-test each RAM stick in each RAM slot (no difference)

-loosening screws in case the motherboard was shorting everything

-pressing MemOK

-trying a fifth RAM stick from another computer

-unplugging reset switch

-checking for swollen capacitors

The lack of beeping makes me believe its either a CPU or motherboard problem. I have not tried the BIOS USB update since that can permanently damage the motherboard and should be treated as a last resort


Any and all help will be much appreciated. I will update with a solution if one is found

 

[ranchduboise]

Also not sure how relevant this is but the moment the problem happened the power button from my case started popping out to the point of almost slipping out (Phantom 410 case). I had a previous problem with my graphics card burning out which caused my H100i water cooling logo to change to light pink. Now on this problem my H100i water cooling logo changes from white to dark green. Not sure if its related or anything but worth telling you