Whenever I start a flight all my screens are black, I've tried everything and i can't solve it

Startup the Flight1 Puchasing Agent, uninstall and then reinstall.  Before installing, make sure Windows Defender and any anti-virus program is turned off.  When starting up FSX, make sure you right click the icon and select Run as Administrator.  If this does not solve your issue, rename your fsx.cfg to fsx.off and restart FSX in admin mode.  This will create a new FSX.cfg.  There are a couple of tweaks many put in the fsx.cfg that were not entered correctly or with the wrong values/parameters.  Many also raise their settings to the highest.

The video card drivers could also cause this issue.  I see you tried everything and cannot solve this issue so finding a solution will be nearly impossible but we need to continue to try.  According to Google, many others have had this issue and solved it.  If we cannot solve it here, I strongly recommend you go to the Flight1/QW Forums and see if one of the techs involved in putting this great aircraft together can solve this issue for you.

I continue to have this problem, even 2 years later