Black Screen Crashing PC

Hey guys, I've been playing Warmane WOTLK for a while but am having an issue recently. I've been usually able to play fine but occasionally when I log into my character, the screen turns black and the sound goes off. My monitor checks for a signal but cannot receive one and I am forced to restart my computer. Nothing works to exit the game (Alt-F4, Alt-Tab). Any help?

if you log a different character is fine ?

No, its happened across a few characters

try to download an other Wotlk client and test without adding any "Addons"

https://www.warmane.com/download > "Wotlk (old)"