Razer Blade 15 Thunderbolt - DisplayPort no Image

Hey guys, this is my first post here. :) I have a problem with connecting my Blade 15 Advanced (2021, RTX 3080) to my monitor I recently bought (HP X27Q) via USB-C to DisplayPort, as the monitor stays black and says it would not be connected. Hdmi works perfectly fine, but DisplayPort is not working at all. I've tried different cables, ranging from DP 1.2 to DP 1.4, but nothing. I also tried unplugging the monitor, cable and notebook and everything but I still don't get a picture. Does anyone have an idea how I could get it to work? :) Best regards, Philipp