I could not even get my laptop to read the disc for the game Rightclick the desktop item and select run as administrator when you launch. Might fix it.
Tried asking on an IL-2/pc/gaming forum rather than an airsoft one? I generally find when I google these things they've already been asked somewhere else already. Honest question.
used to get the same problem with BF2 way back in the day. Was graphics card related. Have you updated your drivers?
Rightclick the desktop item and select run as administrator when you launch. Might fix it.