I rang PC Specialist today and they said there was an option in the BIOS to disable the screen and this had been checked. I have never been into this BIOS so I don’t understand how that could possibly have happened. Anyway they have it on stress test and I can pick it up tomorrow.
Except I have booked the van in tomorrow at Gateshead for 7 am to get all the brakes replaced! It’s their company policy to not let machines go out without a thorough stress test but I persuaded them to let me have it and finally I picked it up about 15:30 and headed up north.
The first thing I did when I got parked was go into the BIOS, and work out what keystrokes I’d need to enable the screen in case that problem occurred again. I’ve never heard of a switch like that and have not a clue how it could have been changed. However it’s all done now so let’s hope it behaves.