I have a new PC. Windows 10, I7 skylake 16 gig memory and an Nvidia 970, Gygabyte motherboard.
About every other time that I reboot the PC and start GW2, it locks up the computer.
It loads, logs in, click play. I get a black screen with the music playing. I loaded the 64 bit version of the client because I was having this problem with the 32 bit version.
The only thing that I can do is Ctrl Alt Delete to get to task manager, but even there you cant do anything other than reboot. I mean freezes. Nothing else works either.
Usually, I reboot, repeat and it works. Sometimes, I have to do it more than once.