On my Bros pc now but my laptop now wont go after i used it this morning.  turn it on enter power up password then i get black screen with white text saying it may have been shutdown to soon or a power cut etc, so choose from 5 options:-
  safe mode
 safe mode with network
 safe mode with command prompts
 start up in seetings that were last saved by windows
 normal windows start up 
 none of them work once one is selected a blue screen with white text comes up for a second to fast to even read. 
 Then goes back to asking for power up password

  Help please
  Its running xp pro by the way
