Chosen Solution
my laptop has no battry and works with charger cable. its screen turning off after afew minutes and in os i can turn it on with fn+f8 but after first screen off it happens after per min. its wierd becuase i connected a monitor to my lap but it work and never shutdown but laptops screen gone. its happen in setup bios or every where you think. laptops screen gone but monitor crt remain. can you help me????
Most likely the connection between the monitor and mother board is old and dead or damaged in some way
