You remind me of a friend of mine that seems to find ways against the odds to bugger things up 😀
Having said that I recently put the Dreamblaster S1 in backwards in a sound card and fortunately all it did was stop
the computer from turning on. I wasn't being careful and didn't properly look into what I was doing first, which is
way less acceptable for me as I'm and electronics tech.
I would strongly suggest in future posting here before attempting things like this, and post photos wherever possibole.
As far as Your motherboard and cache is concerned, carefully remove all of them and see if the motherboard still boots. Putting one in backwards will
most likely kill the chip. I would think they need to be matched probably, consult the manual if You have one.
Atari 2600, TI994a, Vic20, c64, ZX Spectrum 128, Amstrad CPC464, Atari 65XE, Commodore Plus/4, Amiga 500
PC's from XT 8088, 486, Pentium MMX, K6, Athlon, P3, P4, 775, to current Ryzen 5600x.