Question Dell Inspiron boots but screen doesn't work (external monitor does)

[GrahamPB]

Hi, I have done a fresh install of Windows 10 on a Dell N5050 the screen worked fine through the installation process but now will not come on once Windows has loaded. If I connect an external VGA monitor that one works fine. When I click on "Display Settings"->Detect" it only finds the external monitor.

The process is: power up and the Dell screen comes on, then Windows 10 logo on a black screen appears with the rotating dots as Windows loads. Once that is done the screen backlight is on (light around the edges) but the screen is black. I then connect the external VGA and can complete the log in process.

I thought it might be a driver issue I could roll back but under Display Adapters there is only an Intel HD Graphics 3000 entry (and roll back is greyed out) and only the Generic PnP Monitor under Monitors

 

[COLGeek]

Have you cycled through the display function key (internal only, external only, internal and external)?

https://www.dell.com/support/kbdoc/... Computer Fails to Start or There is No Video

https://dl.dell.com/manuals/all-pro...inspiron-15-intel-n5050_setup guide_en-us.pdf

 

[GrahamPB]

Thanks but yes, I have tried that. The Laptop screen is greyed out and each option has the same result - picture only on the external monitor

 

[COLGeek]

Just to make sure, an image does appear on the laptop screen, but blanks once Windows starts. Is that correct?

 

[GrahamPB]

Once the power is turned on the Dell logo appears with boot options then the Windows Logo appears with the revolving dot circle as windows loads then the screen goes blank. Images below (apologies for the glare)
Power on

Windows Logo

Windows Loading

Windows Loaded - just backlit blank screen

VGA External monitor plugged in

 

[GrahamPB]

Problem solved! I had a suspicion it might be a BIOS issue, after updating the firmware the screen is now working, thanks ColGeek for your help.
Cheers