: Open your copy of NFS ProStreet and wait for it to reach the main menu.

Go to the tab (or "Processes" if on an older Windows version). Set Affinity : Find NFS.exe , right-click it, and select Set affinity . Uncheck " All Processors " and select only CPU 0 . Click OK.

: Return to the game. You should now be able to click Create New Alias , type your name, and save your progress.

: Press Alt + Tab to return to your desktop. Open Task Manager : Press Ctrl + Shift + Esc .

The most common solution is to force the game to run on a single processor core while you create your profile: