I downloaded the demo and wanted to try it out, but when the window opened, the main menu began to flicker. Cursor's position is reset to the center on every frame, as I noticed, so I couldn't exit the demo or open settings and had to shut it down via process manager (or just forcefully turn off the computer the first time, it's hard to switch to the task manager somewhy).
The computer is HP Pavillion dv7 6053er with Win7, you can easily find its tech specs. I doubt it's so underpowered it can't run the game. Also, I have a monitor connected to the notebook running with 1920*1200 or something, which influences videocard's performance (original resolution is ~1600*900), but not sure that's the case.
I can record what happens on my mobile phone if you want.
In addition: wanted to change my username, but the site keeps telling me that the password's incorrect. That's probably because I've 'registered'/logged in using Steam account and tried to use Steam password. What should I do?