Hi,
as a general rule, I would list my PC specs, as this will let someone better understand if there are issues with your PC. Maybe you are trying to run X-Plane on a 32-bit PC, or else. Also, add the X-Plane Installer Log.txt, (it should be on your Desktop), to let someone analyze it and get more information to help you out. I run X-Plane 11 on a 5 year old PC, with 4 GB of RAM, and never had a crash, and I do not believe your issues are X-Plane related per se.