Hello guys!
I just solve this problem...somehow.
I got same problem with apache (Busy. . . ERROR Apache service not started [-1]).
First:
I try to delete XAMPP directory. Before that you must kill apache process in windows task manager.
Then I tried to install xampp again, but with no luck. It did not work again.
Back to beginning.
Before new installation of xampp, open registry, and carefully delete all keys where apache is mentioned. Be careful. Don't erase LEGACY_APACHE2.
After that restart your computer.
Now install xampp again...and its working! Yeeeee!
I hope that will solve your problem.