Not sure if the problem is the screen, a ribbon or something else but wondered if anyone else had seen these symptoms before. This is a Sony vaio laptop.
Turn laptop on, screen does't power on and after 30 seconds laptop powers off again.
Tilt screen to a different angle, laptop boots in to windows and works fine.
Tilting the screen or moving the laptop (causing screen to wobble a minute amount) once booted in to DOS or windows either causes it to reboot, sometimes with lots of diagonal lines across the screen first, or it just freezes .
Only found out through luck that the laptop does actually work, it was considered as dead as a dodo before being given to me