corrupted files help me

Kimberly P

Estimable
Jul 20, 2014
2
0
4,510
I bought a used laptop from pawn America last week we checked it out it was working and worked fine until earlier..it just said there was no connection not showing any networks at all called Acer helped figure what problem was..said files are corrupted and need to be cleaned out but the warranty that was on this computer had expired and wanted $100 to tell me over the phone how to do it...can someone help me..I have so much homework to do??? And little money!!