Hacking My roommate did something to my Supercard MiniSD and now it doesn'

[Peer]

I let him borrow it for a day and he gives it back saying that it wasn't working. I turned it on and it starts up, but when it got to the game list it just showed some garbled, unreadable text. I left it alone for a while and when I tried it again it was working. I just tried to add a new game, and now it starts, but when it gets to the game list there's just a white screen on top and the normal supercard logo on the bottom. I've tried formatting my sd card so many times but no luck. Also, when I start it without the SD card in, it says "No SD card" so it seems like it's not the supercard, but my SD card that's messed up, but it's still recognized by my computer and I can add files to it, so now I'm really confused. Is there anything I can do?

 

[rasputin]

Starting up on white screen on the sc-slot-2 could be a sign that a button is stuck on your DS, check your L+R buttons (blow in them to free them if stuck)

 

[Peer]

Well when I held the L+R buttons when starting up the supercard, I get this:

Test SRAM
SRAM error:
A bunch of numbers
CPLD to SRAM error
CPLD error