I shut down my lap, but the f12 key is on.i can't restart my computer

hp i5 windows 8
after clicking 'pc settings' the screen got stuck.
i pressed alt-ctri-delete keys and chose 'shut down'.
but now the f12 key's light is on and the screen is off.
please help me to solve the problem

Hey @sarithas ,
Welcome to the HP Forums!
I understand your notebook is frozen with a blank screen.
Press and hold the power button for 8+ seconds to force shut down.
Wait a few seconds and turn the notebook back on.
Let me know if that helps.
Please click the "Kudos, Thumbs Up" at the bottom of this post if you want to say "Thanks" for helping!
Please click "Accept as Solution" if you feel my post solved your issue, it will help others find the solution.
The Great Deku Tree
I work on behalf of HP.

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I shut down my lap, but the f12 key is on.i can't restart my computer

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