Hello, i recently tried to install windows on a diff hdd when i booted up from discs i had a blank screen , now nothing happens no bios no run from cd i have a ssd alongside 2tb western ditgital on asus p8p67pro efi bios i tried reverse but no joy cannot boot up at all . windows was fine on the ssd but now nothing tried clear cmos run mem ok still nothing i have one red led on mb vga and no bios beep , be very greatfulll= if somone could give any other idea,s and i also tried reeboot bios with flash drive .....