Version of AE? Build? There are a bunch of 64bit OS varieties so OS? Last question, has AE ever worked? If so, what changed?
I've the same problem.
AE CS6 11.0.3 on Win 8.1 64bit
ATI FireGL V5900
Intel Core i7-3770 CPU @ 3.40Ghz
I try with different drivers but AE don't work.
Someone can help me?
Update your graphics drivers, enable compatibility mode for Win 7.
I know Microsoft pulled Windows 8.1 from their download store because it was killing their Surface tablets. Perhaps there were some other issues with it as well.