WoW not responding on startup

Hello, i’ve recently downloaded the game on an old laptop of mine to be able to play while away from home. The issue is: whenever i launch wow from the Bnet app - ( pressing “play” ) the screen just goes black and the circle cursor appears, showing that it’s not responding. After around 10 minutes wow finally opens and i’m able to play it. Unless i press system settings in-game by mistake, then it’s back to not responding. Everything in game is fine, the loading times are okay, it’s just the startup and entering the system settings. Anyone has had this problem before?
Cheers~
Zillon the Patient
Argent Dawn EU

Well that’s the general problem many people are having on laptops, see the huge thread: Game doesn't work after 8.1 patch - #439 by Geozyllane-turalyon