When I try to install the game, the installer sometimes gives me CRC errors - always for different files, and sometimes the PC would just reboot in the middle of the installation. I tried backing up the DVD and installing from an image - still the same thing. When I tried skipping past all those errors, the game finally installed and started updating, but after downloading the second update it started checking it, and the PC rebooted once again just after the checking had started. What should I do? Thanks.