I got a 4 gb memory for psp. and while something was transfering i accidentally took it out now its not workin

May be...

i cant format or anything according to it it has no memory at all. is there like a program or something i can do to fix this

damn thats sad

I had the same thing happen and no matter what I did I never got it working... I ended up going to game crazy and buying a used one, then put the broken one in the box and took it back for a refund. not vary honest I know but I guess if they can charge $30.00 for a game that costs .12 Cents to make, they wont mind.