Ok to put it simply the windows installer (the .exe file not the .jar universal) is not launching. For any forge install version ranging from 1.12.2 recommend/newest and 1.12.1-1.10. I have attempted to launch it both in administration and not. I have done a complete reinstall of minecraft and java separately. I believe it to be a java error since this started with my 1.12.2 forge (which installed fine a week ago) not being able to create a java virtual machine, ive also done many fixes for that ranging from putting in new system variables to doing complete reinstall. Now i thought this was a java issue, but after some testing the only time it doesn't work is with installing forge. Without java installed, i get a prompt from the forge installer that i dont have a java runtime, but with one installed i get nothing. I dont get anything on task manager, and the only feedback that it tried is a mouse pointer loading spin.
I do not know how to find crash logs for the installer since it doesnt seem to be a minecraft problem.