Technical Problem: Wotlk shows black screen, but EVERYTHING else works

Hello Warmane,

i play wotlk 3.3.5a since 4 years on my pc without any problems.

A few days ago i downloaded and installed official WoW Classic via Battlenet.
Since then my WoW Wotlk only shows a black screen when i start. But the strange thing is, that the sound works, i can fill in my login data, i can see the mouse, i can even login (I hear the sound of login), i can select a character and even use spells ingame. But all the time the screen is dark.

Even more strange, when i tab out of the game or use windows key, for a timespan of circa 0,5 seconds i can see the game, for example my paladin standing in dalaran, its really weird!

I already deleted cache and error folder, updated my graphics card driver and even deinstalled WoW Battle for Azeroth and WoW Classic from battlenet because maybe the influence my WoW Wotlk. nothing worked.

I Would be happy if someone can help me.
Thanks in advance and sincelery, Scruff

Loktar Ogar, Blood and Thunder, for the Horde, Taz Dingo my friends!

Hello to myself and thanks nobody for helping (jokes!),

in case anyone else has problems like this:
https://www.reddit.com/r/wow/comment...as_sounds_and/
AND
https://www.reddit.com/r/wow/comment...raphic_driver/

In my case, actually, i just had to unplug my second screen, afterwards it worked perfectly x)

Greetings Scruff