My friends computer gets an error on bootup that says, "we're sorry for the inconvenience, but windows did not start. Either a hardware or software change may have caused this. Then goes on to explain some options on what method to use to start up. Last known good config, normally, safe mode, etc. It does this everytime the computer is turned on and he has selected all the different options but all of them end up back at that same screen. He was going to reformat but he can't enter setup. Any help would be greatly appreciated. Thanks.