I just did a fresh install of P3D today, after being away for almost a year. I have win 7 64 bit and P3D V2, running P3D in admin mode. I installed KDFW and got the couatl.exe was unable to start correctly (oxc000007b). I download the installer for KORD, since mine was older and did not have the P3D option. I tried installing it and got the same message in startup. I downloaded VC++ 2013 from the GSX forums, which did not help. I also uninstalled DFW and ORD from the control panel as well as told it to remove the manager. I then reinstalled and that did not fix the problem, also I do not run anti virus so there is no conflict there.
Any other ideas?