I had similar probs to yours and Wrag's a couple of times. (After new card, and Sys crash/Re-install everything).
Both times the fix involved the vid card.
1) Check your DirectX Diagnostic TEXT file, Look for more than one video card. You may be still showing the old card, if so, boot up in safe mode, open system properties, and get rid of all cards listed 'cept the new one.
2) In your: ~\Aces High\Settings\ folder , and delete the "video7.cfg" file. (Back it up foist!). When u start the game, it'll run u thru the setup again. (SHOULD anyway)
Hope this helps
S!