Sometimes when I unplug the power from the back by accident it will freeze.
But if you unplug the power cord to run in battery mode the screen goes blank so cannot see anything to run the same tests. 
Fixing Laptop Screen Too Dark – MacOS Mac does not appear to have this issue as often as Windows laptops do but if you do find that your Macbook screen is dim at full brightness, one solution is to reset the System Management Controller (SMC) which, among other things, controls the backlit display of your Macbook. SPECS: Gigabyte H81M-S2PH Motherboard Intel i5-4440 Processor 8gb HyperX DDR3 RAM Cooler Master MWE 550w PSU So i recently bought a Rx 570 4gb Asus strix and i installed the GPU on my PC but when I try to boot from the GPU my computer monitor just shows a black screen while all other components s. 2 I cannot use my laptop whenever I plug the charger in. On the Bios screen, go ahead and unplug the power adapter and check if the screen goes blank/black. 
If the screen dims out gradually, or just goes out altogether, there could be a problem with the FL inverter of the laptop. Type "Control Panel" in the search window, then select Control Panel from the list. I have a user whom has a prblem with her laptop, everytime she undocks it the screen goes blank (I suspect she must have a external monitor connected to the docking station), there is still power to the laptop and the FN + F5 key does not fix the To fix it, I had to go to Power > On Battery > Global Settings > Display Refresh Rate Switching, and set it to Disable. I do not want my laptop to change brightness when my laptop power is plugged in or unplugged. I've checked the power settings and set all of the settings to 'never' but still have i just installed windows 7 and updated to win 10. I used to think that the screen went blank but today I noticed that it dimmed so much it almost was blank but not quite.
Windows 10 provides a troubleshooter that can help you detect and repair problems related to the battery. Hello, g'day I have a HP Envy m6 Sleekbook and just today I have realized after plugging in the ac adapter that tge screen woul go completly black. If you've got a black screen on boot, various things can cause the problem on Windows 10. There are 8 solutions to help you fix the PC turns on but the screen remains black issue. When I plug it back in the screen comes on. If I unplug my charger, the screen returns to normal. Then click the “Change advanced power settings” link. It also turns black sometimes after exiting the game. Laptop screen goes black when unplugged windows 10 When the screen goes black try and press the fn f4 key If this does not work 3.
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