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Is there any way to keep a laptop screen turned off even if some key is pressed? Sometimes you may need to fast-forward or rewind a sound clip, but do not want the screen to come back on. Is it possible to prevent that from waking up the screen?

I don't have any button to do this on my laptop.

I'm looking for a virtual display device to allow windows to project to second screen only.

SherifKhalifa
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4 Answers4

2

There is an easy way: most laptops have a Fn-hotkey to switch between LCD / External display / Both. Switch to external display and press any keys you want without waking up the screen, then switch back to LCD to see what have you messed up :-). I think, on Dell it was Fn+F5, on my Thinkpad it is Fn+F7.

Edit:

There are also mechanical tricks. If the screen open/close sensor is mechanical, it can be pushed with some small object (and probably scotch tape). If it is magnetic, you can try to fiddle with some small magnet to discover it and trick into thinking the screen is closed.

MKaama
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1

I might be a little unclear regarding your question. To my understanding you want to prevent a mouse/keyboard from waking your computer or does this include software? Sticking with the hardware you can probably use:

Device Manager > Keyboards > [Keyboard You User] > Right Click - Properties > Power Management

Untick "Allow this device to wake my computer". Rinse and repeat for your mouse.

enter image description here

Update

Have just found a nice article from howtogeek if you want further reading.

Matthew Williams
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0

Use following ahkhotkey script

#c::
    while (GetKeyState("Ctrl") = False) {
        SendMessage,0x112,0xF170,2,,Program Manager
    }
Return

Win + C to turn screen off, Ctrl to turn it back on

DarkDiamond
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My Device
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Device Manager lists for every device that can wake up your computer whether it's also allowed to. Microsoft

MSalters
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