I don't know what happened there... computer problems

So.... My party is doing pretty well. My fighters are up to 5th level... getting close to 6. I save the game and come back to it in a few days.

When I load up I find that all character names have disappeared and AC for these blanks is 60. I press view and it says Lawful Good Monster Cleric.... What on earth has happened here? I'm guessing its a corrupted file and I'm screwed unless I go back to an earlier save? It's just that I was saving in the same letter for ages and don't want to repeat loads... Any way around this people?

You could try with some restorer programs to get the file back.

Overwriting/deleting is only (mainly) changing the master table on the HDD and as files are always stored in new/different sectors the chances are high that you can get a backup back again.

But otherwise, make backup of those savefiles in between. (like using a bat-file for starting and making an automated compress of the savefiles.)

Reminds me of the old joke with Jesus saves ;)