Windows 7 Laptops Randomly Blacking out
I have a weird problem with 30 RM laptop, they have been randomly making the screen go black in lessons. No noticeable pattern, I thought it might be Chipset, AHCI Drivers. Even thought might be dodgy batteries No luck! Event logs were empty!
However I have discovered its something to do with multiple monitors, if you plug in a external monitor the screen returns to normal. I then noticed that the laptop had decide that it had two screens (In additional to the external monitor).
I found by pressing Windows-P and choosing duplicate display the laptops were restored to normal.
Anyone got any ideas why they would randomly be getting this extra monitor! Or a way round as pupils short cut keys are disabled!