I have a dell inspiron 15 7000 series 4k . When i power up or wake from sleep the screen is on but black. Screen works fine.

Tmansmooth

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Jun 4, 2015
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I need to get this fixed. Laptop screen is on but black. Not a hardware problem with screen because somtimes it works. Works with external monitor somtimes also. I checked ram and also checked static.
 

gaz

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Aug 17, 2008
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Most sleep and hibernation problems can be fixed by doing the following:-

Open a command prompt as administrator.
At the command prompt, type powercfg.exe /hibernate off, and then press Enter.

Restart your system.
Now go back to command prompt (as admin).
At the command prompt, type powercfg.exe /hibernate on, and then press Enter. (that is a space between exe and /)

This should resolve the problem whereby a computer will not resume from sleep or hibernation.
 
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