Hello guys, lately I moved to fsx-se and I'm trying to add all my addons to fsx-se but I have an issue with the dx10 (I don't use it). When I check the dx10 I got a black screen on planes preview and the game don't load. Any help I will appreciate it.

Hey Andre,

Does Your Video Card Support it ??

Johnman

I forget to mention on my other laptop works just fine. On my current laptop I got nvidia 870 card.

 

Yes the card support it.

I too have recently started to get dark background and no planes in the free flight screen. I can select my planes and when starting fly now, I get panel working but no scenery in any view. This is fsx w/acc.  I have gone thru my config and there is no difference from my other computer. 660 nividea-3gz-8g_mem with 2 tetra..Running from tetra drive.Has been working fairly well for this year but when I added new planes 2 weeks ago it just reset after fsx 1st sim screen.

When fsx was first shipped out back in 2006, dx10 was incomplete hence the "dx10 preview". So there will be a number of bugs and anomalies that you will come across. 
On the other hand, if you use steve's dx10 fixer it will fix pretty much 99.9% of the issues making dx10 usable. 
Link below is where you'd be able to find it. 

https://stevesfsxanalysis.wordpress.com/how-to-purchase/

..just out of curiosity, are there any advantages of the DX10 over DX 9 when it comes toFSX-SE ???

While FSX is loading don't do anything else on your computer; just wait for it to load and see what happens. This used to happen to me if I multitaksed in the background during load times.