Try my d3d9.dll fix, this works on my pc and another member on the forums has reported it works on his new laptop.
Click on the attachment, it will download (take note of where it gets located too) double click on the zip folder to open it, copy and paste the d3d9.dll file into, C:\Program Files (x86)\Steam\Steamapps\Common\Realflight Evolution folder (picture of the file on my PC).
Now try helicopters in RFE
I scanned the file with antivirus, no threats found.