I recently downloaded a media file, im not sure if its corrupt or not but i have reason to believe it is. The colours went dodgy (only 4 colour bits and 600x800 sommin resolution and it wont allow me to change anything). Then i shutdown windows and tried to restart, i out in my recovery diskette but that made it worse. now i started the computer, its about to load up but a message says "error loading operating system". I tried using a AV disk using BIOS setup and tried reinstalling windows, but it doesnt help. Any ideas to fix this?