I am coming in late on this.. Just saw the thread
I was going to suggest a clean install and use the FSX Tuning thread install LIST to do it right
Do not migrate the FSX.cfg file from the old install and make sure you follow the directions listed including installing the patches posted.
http://www.simforums.com/forums/forum_p ... ?TID=29041No DX10? I wouldnt bother with it anyway, however that means you either do not have the DX flag set in the config file or the system/FSX is not correctly seeing the DX system..
Make sure the resolution is set to x32.. DX10 will not function in x16 mode
also.. RUN DXDIAG and see if it reports issues. If it does that would be the target problem to repair
3D drivers made for 3D glasses can cause DX10 to not function correctly.
By the way.. there is NOW a tool that fixes aircraft and scenery textures for DX10..
http://www.flightsimtools.com/adconvx/It works automatically if you use it right