Fixed Minecraft has not started because of an unknown error!
To solve this error you must go to your internet browser and search for “java for minecraft“, for your convenience I leave the link to the site in the following link.
You should click on the “Download Java for Windows” button and it will download an .exe file that you will have to run after downloading and installing the java repair file.
After you have installed java for minecraft you should go to the TLauncher and go back to settings on the gear button. Under “Java path” click on the “Browse…” button. Then go to the following path: “This PC > Local Disk (C:)> Program Files > Java > jre1.8.0_51 > bin“, once there you should find the file named javaw.exe and open it.
Just hit the save button and close TLauncher. Next go to the windows search bar and search for “services”, you should open the program called “Services” and once inside find the file called “Performance Logs & Alerts” right click and go to properties. Once inside “Performance Logs & Alerts” where it says “Startup type” you should change it to “Automatic“.
After clicking the “Apply” button and then “Ok” and without leaving “Services” you must enter “Start the service“.
Wait for the bar to complete and then click close. Ready, open again “TLauncher” and enjoy Minecraft.