Thank you for the log.txt file. It tells me a few things about your installation.
X-Plane does not install on any PC or laptop like any other shoot-em-up games or flight simulation packages where they install all over or throughout your operating system files. It has to be totally installed in its own directory or on the desktop.
I don't know the structure of your laptop and how many drives you have. My reading tells me you have an extra drive designated "D" where X-Plane is a sub directory under a directory called "Programs"
The recommended installation is as detailed in the manual which can be found at https://x-plane.com/manuals/desktop/#dvdinstallation under the heading of DVD Installation. Alternatively, as I have done, you can install XP onto a dedicated drive as a standalone directory but not not as a sub directory. If you purposely want X-Plane on your "D" drive then your installation should be "D:\X-Plane 11|..." and not as shown in the log.txt file.
From previous postings in this forum, "jroberts" a Laminar Research staffer has quite often stated that X-Plane should not be installed as a sub,directory of a higher ranked directory as problems may occur. More so if installed within windows.
My advice is as follows:-
1. As you have added 3rd party add-on plugins copy this whole directory with subdirectories onto a suitable sized USB stick for re-installation at a later stage.
2. Delete all versions of X-Plane on your laptop. Why you have 2 copies you haven't indicated. There should be no remnants anywhere on your laptop to avoid any intermixing of copies.
3. Download the latest version of the "Installer" file from Laminar Research.
4. Using the current version of the installer file reinstall X-Plane to your choice of location. If it is on to the "D" drive, make sure it is as "D:\X-Plane 11\ ..." Not something else. During the installation process you will be asked for the product code. At the end of the installation process you should have a "clean skin" new or fresh installation of X-Plane.
5. If you have original versions of all of your plugins install them one at a time as a "clean skin" installation. Otherwise copy the plugins directory from the USB stick back into the newly created.
If done systematically you should not have the on-going problem.
As an addition:-
1. How have you installed the Saitek/logitek joystick? No Logitech hardware will work satisfactorily if not through X-Plane. If you have used the logitech software let me know and I will advise on a solution.
2. Are you able to overclock your i7 CPU? Your CPU is 2.8 GHz where as the current recommended CPU speed for X-Plane is 3.00 GHz.
Good luck with the "fresh" installation.