4slot broken?

I have an unusual situation.
I had a working 4slot MVS in my college dorm working in the fall.
After Christmas break I decided to start playing again recently. When I initially booted up I noticed that a chip was loose...it was my (EURO?) BIOS. I re-inserted it into the holder which was extremely snug (how did it fall out to begin with?). another try at boot up failed, and then I realized I inserted the BIOS in reverse, which I then corrected.

As it stands now the system behaves the same whether or not a cartige is present: it displays a random set of squares and "sparkles" in low level purples, blues and browns. Would I just need to replace the BIOS with one from back home or is my system fucked?

It did cross my mind that University room inspectors fucked it up by stepping on it or something.

Start by getting a uni-bios from Raz or program your own if you have the gear.

They do not extract themselves, some one has messed around with it imho.

Insert the new one the right way around this time

Sounds like you just need to replace the bios with an eprom (containing the bios of course).

Thanks, I'm having BIOS sent up from home and I'll try that.

Indeed it is weird that the chip was loose. There were one or two times I blacked out from drinking, but I doubt that I could have been able or motivated to remove the cover, two PCBs, and the wood base to fiddle with it.

If it doesn't work then maybe the socket for the BIOS is borked...

tried out a jap bios, hen left on for 30sec goes to cross-hatch screen however with either bios when a game is inserted ow, tI get a temporary image then the video gets fucked up so that my xrgb2+ "blacks out"

thanks for the help everyone, I feel shitty about ruining the board somehow, when i have money again in the summer i will probably send it to get repaired or just sell it off (significantly discounted). in either case i will probbly just pick up a mv-1c for simplicity's sake