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]

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.

 

[Reyaz123]

Remove your battery and charger
Hold the power button down for 15 seconds
Put the battery and charger back in
Check if it boots up properly

 

[gaz]

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.