hey, my laptop is messed up it says ''we appolpgize for the inconvienience, but windows did not start up succesfully. a recent hardware or software change might have caused this. and it says highlight a choice safe mode, safe mode with networking, safemode with command promt, last known good configuration and start windows normally. ive tried them all and none have worked and it also has a 30 second timer in which it just goes back to the same screen. CAN SOMEONE PLEASE HELP!