Windows 10: Laptop screen going black at Windows login

My laptop boots normally, I can see the laptop logo on the screen. As soon it gets to the windows login screen it goes black. If I plug in an external monitor I can see the windows login on the monitor, the laptop screen stays blank. Once into windows, if I disable to AMD graphics card that I have, the laptop screen works again. I have tried reinstalling the graphics card but this then goes back to the black screen issue. Does anyone have an idea how to fix this?

:)

 

Toshiba Laptop Black Screen

I have a Toshiba Laptop, Was reinstalling windows 7 on it last night left it doing the updates then shut it down. Turned it on this this afternoon only to find the laptop screen is Black and also there is a burning smell coming from the Fan.

I connected the Laptop to a external monitor that is fine, Can go into bios, Windows boots up fine Etc.
Just took apart the laptop earlier to check all the cables where in correctly, Checked the motherboard over for any damage, burnt bits but but found nothing. Just put it back together now but im still getting this burning smell and i still cant use the laptop screen only a external screen.

I Tried Pressing FN+F5 to switch to the laptop screen, But still black screen. Any Suggestions please ?

Thanks

 

Black Screen after Log on

Laptop or Desktop (Very important) Windows 10 build 14.586 has a very annoying BUG: That causes Black Screen after login:
To date there is no cure until Microsoft send Update to fix the problem: OK here goes: When you Login and the Screen Goes Black ==>
Go to your Function Keys for Screen Brightness Chose to Lighten the Screen (This will make the screen Bright) so that you can view it.
The BUG is that they reversed (via Software) what the Brightness button does -- So it is currently reversed -- "Lighten" makes it Dark -- "Darken" makes it Bright ==> Go figure Microsoft screw the pooch on this one. . . .

This is for LAPTOP -- I have never seen this on Desktops but they are fixed rather than adjustable

 

black screen

Hi Bart,

It is possible that you're experiencing black screen due to corrupted system files. To assist you better, we'd like to gather more information:

• Are you getting any error messages?
• What happen when you tried to login?
• What troubleshooting steps have you done so far?

In the meantime, we suggest that you follow the steps in this
article to troubleshoot black screen errors. You can choose which situation you're experiencing the error and perform the instructions.

Let us know if you need further assistance.