I had my online computer go down recently, so I had to put my offline computer into service as my only unit.
It is an older HP Compact 7700 minitower, it only had 1/2 gig of ram, and on-board video. Everything seemed ok, I had Auto-CAD, FMS, my personal pictures, and things like that. I didn't want it to get screwed up with all the internet BS, that slows down an online computer.
I increased to 4 gigs of ram (maxed) and installed a Zotac GeForce GT 430 video card, it has 1 gig of video ram, and has an NVIDIA engine, and direct X 11. It is supposed to be good for games and even 3D
FMS simulator worked fine with the on -board video, but now most of the aircraft is transparent, I can only see about 30-40%.
I have checked everything I can think of, and get no error messages anywhere.