recently I inserted a flash drive in my desktop computer and immediately I got a pop-up from Norton Anti-virus saying the autorun.inf file is infected (may be there was some virus in the flash drive data) and I think it has deleted the file from C drive. after that the icons for the C drive and other drives are not showing up and also the icons are not displayed for some of the file types (like text files and some other files). I restarted the computer, but the problem still remains. how can I restore this file now and also the missing icons for the drives and the file types? Thanks in advance.