hi all,my daughter has got a dell d620 refurbished laptop that has just stoped working. first of all the dell start up screen comes up,then says theres been a problem,apologizes,says you can start up in all the differnt modes,windows xp comes up on the screen,goes blue for a split second with some sort of text but goes off to quick then it does this whole process again.i've tried all the different f keys.because its a refurb i didn't get any sort of cd or floppy to go with it.PLEASE HELP,MANY THANKS