UE4 Lit Mode is Pitch Black, HELP PLEASE!!!

Spencer_Holmes

Hi all. I have been using UE4 for a while now and everything was working fine. The other day I started it up and the perspective view-port was black while in LIT mode and I could not see nothing. I thought it was the updated version of the engine, so I rolled back the engine to 4.9.2 but the perspective view-port was still pitch black in LIT mode.

If I click on UNLIT mode, then I can see the game world but I cannot in LIT mode. If I add lights, it still stays black, if I build the lighting it still stays black, if I click PLAY, it still stays black. I really do not now what to do to solve this problem.

I have added a couple screenshots for you to take a look at. If anyone can help it will be massively appreciated. I have 24 students who need to use UE4 to complete a couple units worth of work, if it's black then they won't be able to complete their work.

Kind Regards

Obscura

I don't know whats happening, but I can see that its not only your viewport that does this. Also the mesh and material previews. 
Did you update your graphic driver?

Also, how is your exposure setting?

Spencer_Holmes

I didn't change anything. One day it was fine and the next it was like this. I am stumped to be honest. I don't know what to do.

musashidan

Very strange? Possibly a GPU issue. Did you update/rollback a driver?

Spencer_Holmes

musashidan said:

Very strange? Possibly a GPU issue. Did you update/rollback a driver?

I didn't change anything. I am going to download amd catalyst today and see if that can find a better driver for the gpu, hopefully that will help. If not, I don't know what I am going to do.

Spencer_Holmes

After a little more looking into things, I am starting to think that the gpu has failed on the computer and it is using onboard graphics. Does this sound like a possibility?

musashidan

Have you investigated in the device manager? What do your other 3D apps behave like?

Spencer_Holmes

I have investigated and I believe the gpu has blew and the computer has reverted back to on-board graphics. However, 3ds max, Quixel and other apps work fine. UE4 works fine on all the other computers.

We are in such need of an hardware upgrade.

Butthair

It sounds silly, I've done it a few times, if you recently unplugged your monitor, make sure it's plugged into the right slot (ie not mobo slot)

Obscura

@Butthair - It was satisfying to write down your name. But seriously. Some of these threads are half a year old.

Vexar

Create a new project dont change anything and see if it happens again. You could have changed some options in rendering or lighting or the camera or even post proc vol to create issues like this. If it happens still change the renderer under the options to a forward renderer and it will rebuild the shaders / restart the editor, before trying this change the preview shader setting to shader model 4, 5, or the other options see if it is fixed, turn off the editor monitoring, change the settings from cinematic to low, see if you can see anything. I will think of some more ideas let me know if any of this worked.