I have a 4 year old Compaq c700 laptop running Ubuntu.
The problem is that one day the screen suddenly went dark, but the OS still boots up fine. Then I did not use the laptop for a month. After a month, when I booted the laptop, suddenly the screen was working for few minutes, but then it was gone again.
A hardware engineer told me that it is due to old BIOS setting (laptop takes good 2-3 minutes at BIOS screen before OS loads).
Now I'm really confused. Can problems with the BIOS cause this sort of behaviour?