yep Gaonkar is a Very good book...

hey try cleaning ur C drive. Delete files in C\users\<ur name>AppData\local folder...these are the temporary files which get accumulated after some time...this problem is more predominant in Vista...hope it works...😁

hey try formatting it by logging in safe mode...Some times a executable file(virus) in pen drive starts running as soon as pen drive is inserted...if u r unable to even...