After upgrading my PC (It's an all-in-one HP Envy 23. Has dual core AMD 3.4 with radeon graphics. 6MB memory and Windows 8) I tried all ways to install FSX, even purchasing a new Gold version. I couldn't get the windows installer to install either from the DVD or the website for demo. Tried every tech in the book. Tried X-plane 10, it worked, but couldn't get mu SaitekX-45 to work. Got prepar3d for $200it installed, but same thing, even with updated drivers, my X45 wouldn't work properly, neither would a loaned CH yoke. Now I've given up and installed FS9. It works like a charm. I always did like it over FSX anyway. Problem is I can't get add ons to install using their installers. Neither can I edit config files. Never mind, at least my Cirrus 20 works well enough to pracise with the GNS 430.