I had the same issue, and adding the line mentioned in PSA: SET gxAdapter issue allowed Burning Crusade Classic to finally start successfully. This of course means you are playing with the lesser graphics card, so just a temporary fix.
I had the same issue, and adding the line mentioned in PSA: SET gxAdapter issue allowed Burning Crusade Classic to finally start successfully. This of course means you are playing with the lesser graphics card, so just a temporary fix.