Lemme guess, you turn on apache and mysql and apache turns off...
If thats the case, Re install it, If you have teamviewer up while you install it, IT WILL NOT MAKE APACHE WORK.
No smart ass it all works but when i go on loclalhost it says wwwroot file is not found but i can make that folder as it is a system folder i think my brother detled it because css was installed
If you previously was running IIS that also may be the reason. Make sure you have turned IIS off completely, then start running Xampp. It should work, if not. Try turning IIS on, and run only MySQL (not apache), and take the "phpmyadmin" folder from xampp and over to the wwwroot folder.