- last post: 01.01.0001 12:00 AM PDT
Hm. I had that problem with my old computer, I would try downloading (not sure if Trial has a patch or not) the latest patches, as well as the latest drivers for your computer.
One very strange solution I found in my frustration with that problem was to click the mouse over and over again when Halo appears to make it somehow click into the game. IDK why it worked, but it did before.
As for the 360 controller, yeah, it'll work with HPC. But I recommend mouse/keyboard.