Game crashes after 1 or 2h of play

Shortly put, I've just downloaded Wotlk. After playing for 1 to 2 hours, without any notice, my laptop screen turns completely black and unresponsive.
To "fix" the problem I have to press the on/off button on my laptop, basically to shut it down and start again. Can windows 11 be the problem or is it something else?
Thanks

If the laptop specs are necessary:
Lenovo legion 5
Intel(R) Core(TM) i5-10300H CPU @ 2.50GHz
NVIDIA GeForce RTX 2060 Mobile
RAM: 16gb (15.9 usable)

Well your PC parts are not the problem. Its probably the new windows and old game thing. Try to find solutions on reddit or random WoW forums,maybe someone has some type of "crack". Also try to update your drivers,well known problem.