I just install a XAMPP 7.3.6-2-VC15 for Win64, and when i install it, it\'s fine, MySQL start from control panel without error, et all is ok.
After rebooting my PC,
I got this problem like you . I have solved this problem like below.
Copy from xampp/mysql/backup folder and paste in xampp/mysql/data folder except ibdata1 file.
If you replace ibdata1 file from xampp/mysql/data then some database you will get error table does not exist.