When I try to start FSX I get a pop up that reads ;

 Error

 

Flight Simulator cannot run because the version of Microsoft Direct X ( R ) installed on your computer is incompatible.

Please reinstall Direct X 9.0 by running Flight Simulator setup,  or download the current version .

 

 

I ran the first two discs. ( FSX / Accelerator ) under repair mode. It didn't ask for disc. number three.

 Since I have Windows ten I'm not sure which Direct X Download to use. To be safe I don't want to go any farther

until I get some ideas here. Thanks

Try this link for DX9 download: https://www.microsoft.com/en-us/download/details.aspx?id=34429

I thought I would be creative by downloading an update from A2A since I have several of their planes. During the install it downloaded Direct X so that seems to work. Now I can bring up FSX but before the page opens , I get a pop up that says FSX has to stop. So right now that's as far as I get.

Have you tried running FSX as Administrator?

Yes

Sounds like you've checked the obvious stuff, I suggest asking in the Win10 forum (http://www.avsim.com/forum/731-win10-os-forum/) or the Crash to Desktop forum (http://www.avsim.com/forum/262-crash-to-desktop-ctd-forum/). Hope you have some luck there.

I went to A2A for an update remembering they have Direct X in the download and it seemed to work.