My laptop and I have had a bit of a falling out recently to the point that I gave it a bit of a slap and ending up fragging the hard drive! Oops, anyhow I put a new drive in and was initially running Ubuntu and had no issues with my screen. I reinstalled windows 7 and now seem to find that my laptop screen just goes blank for no reason at random times. It isn't the screensaver, it's not power saving settings but when it goes blank it is still powered and the backlight seems to be on but there is no image on the screen at all. No amount of tapping keys or the mouse pad brings an image back and the only way to get around it is to press and hold the power button to turn it off. On rebooting the screen is always there without fail. The laptop sat turned on but idle last night for over 7 hours without a problem yet this morning I used an external harddrive to move some files and the screen died again after about 5 minutes. I've rebooted and in the last 20 minutes it has been fine while I have been posting this! Does anyone know what this could be?