screen goes black

[tasnimnishat.mggs]

My laptop is Lenovo g4080. today morning when I turned it on it showed the lenovo logo as usual then the screen goes black. though the screen light is working but nothing is coming on the screen. I tried to remove the battery and turn it on again but it goes the same. if I keep my laptop turn on for about 15 mints in this condition it overheats. can u guys plz tell me what's wrong with my laptop.
N.B: I am not a technical person & sorry for my bad english.

 

[Prostar Computer]

Could be one of several things.

1). Windows Fast Startup (Windows 10 only) - You'll need to remove the charger and battery, then press & hold the power button for 5 seconds, then reconnect power and try again (you might consider turning this feature off if this works)
2). Default display is external - you'll need to check for a keyboard shortcut to switch back to the built-in display - the keys should have small icons printed on them to guide you on what to press
3). Windows is hung up, maybe due to an update - Try running a repair on it (you may need to boot from a Windows DVD/USB drive to run repairs)