[J99Eingehirner]

Some guys accidentally and unknowingly push the Windows key while in IL-2. This would certainly reduce the sim to the Task Bar. I've done it myself a few times. The Windows key is of course usually found between the ctrl and the alt keys at the bottom row of keys. I have seen it in other spots on some keyboards.

Hehe... for exactly this reason I have removed the left Windows key as well as the Capslock key from my keyboard I kept the right one though, sometimes you still need it...