I have a windows XP computer and it has gone to the blue error window. I cant use the mouse or get it start so cannot download a programme to fix it. Its a very old computer that I acquired with no discs etc with it, but its worked perfectly till yesterday. I do have a laptop running vista premium, so is there anything i can download to dvd and then use in the XP computer to fix it? I am 70 so if you can give me any instructions then please make them detailed so I can follow them. I do thank anyone very much if you can help me.