I have installed XP and ubuntu by dual booting and XP wont boot at all. It booted properly till now and all of a suddern it wont boot. I tried F8, and it shows the options, and if I click any of the options it automatically reboots. (Even enabling "Disable reboot automatically"). It wont even start booting up. . I have also tried booting up through my boot disk but it doesn't work too. It was working when i tried few weeks ago but not now. It shows a black blue screen and its not even reading the disk, but the harddisk usage light shines brightly. It just remains there until i restart the system. ( Ubuntu works nicely and i think it might not be the cause( i think) ) Please help me.