I have a E520  computer. I ran a sfc/scannow and it said it has corupted files that it cannot fix. I don't know how to see what the files are. Also when I go to f8 to do a repair it said I have a camera or some other thing connected to the computer and it won't do a repair. Tried to restore but it didn't help. I have a 503 error when I try to go to my email at work which I need very bad. I just wish I would have thought longer on buying a new computer. Can anyone please give me some advise on how to fix my computer. My computer I need for my embroidery business.