on ti-8x series you are making a game, you test it then you garbage collect but it doesnt stop garbage collecting and it clears your whole memory when you put a battery and hit del+on

Whoops I meant I thought this was in Other calculator discussion and I use DCS7 it has a custom garbage collect

That never happened to me, but how much stuff is there on your calc? I remember when I had about 1.3 MB of archived programs and groups on my 83+SE, it took up to 5 minutes to GC. The original 83+ manual said it can take up to 20 minutes for the process, so maybe your calc was not frozen, but just needed an extremely long Garbage Collection.

There's a chance it's not all gone. Try running rebuild.8xp on a fresh ON + CLEAR.

If the garbage collect hung, it may not have finished.

Edit:
   And then, after that, get everything off your calculator (or nothing depending on circumstances) and clear all memory to make sure whatever froze it is gone.

Did you try a RAM clear afterward? I know after ON+CLEAR all archive files except apps becomes hidden until the next RAM clear.

Yeah I think ON+CLEAR forces a RAM clear and some other stuff with the archive (resetting the VAT I think), which is why the files get hidden.