when i boot up pc theres like alien writing all over the screen which flashes in sequence till xp logo and when i go to home screen theres dots n dashes all over the screen.....can anyone tell me what the problem can be..ive re-installed drivers to no avail...could it be my harddrive giving up or graphics card ????....i havnt another pc to swop bits to see what the problem is....i thought my bios was corrupted but i cant even read the xp disc on screen commands because of the strange writing...???