sonys are NOT very good- anyway are you sure that you havent a virus/spyware/malware infection? there are disc utilities which you can download from net to help you solve your problem (these uitilites will access your HDD via USB or CDROM) it is a good idea to remove the HDD (look where its located, usually under plastic held by a few screws) then attach to a desktop pc via USB or whatever to read/backup the contents, after you can insert back into laptop & use recovery disc or disc utilities or whatever to solve your problem.
help
January 2008