problem detected

[aledgriffiths79]

hello, following a you tube video on installing a local server using xampp and when i go into the control panel to start Apache and MYSQL the following appears in the report:

Problem detected!
15:50:29 [mysql] Port 3306 in use by "Unable to open process"!
15:50:29 [mysql] MySQL WILL NOT start without the configured ports free!
15:50:29 [mysql] You need to uninstall/disable/reconfigure the blocking application
15:50:29 [mysql] or reconfigure MySQL and the Control Panel to listen on a different port
15:50:29 [mysql] Attempting to start MySQL app...
15:50:30 [mysql] Status change detected: running
15:50:31 [mysql] Status change detected: stopped
15:50:31 [mysql] Error: MySQL shutdown unexpectedly.
15:50:31 [mysql] This may be due to a blocked port, missing dependencies,
15:50:31 [mysql] improper privileges, a crash, or a shutdown by another method.
15:50:31 [mysql] Press the Logs button to view error logs and check
15:50:31 [mysql] the Windows Event Viewer for more clues
15:50:31 [mysql] If you need more help, copy and post this
15:50:31 [mysql] entire log window on the forums

What do i need to do please?