My son gave me a Mac mini.  It worked on a TV screen with remote Mac  keyboard and the Mac mouse.  However, he gave me a Mac monitor and when I tried to connect it was a no go.  Both keyboard and mouse aren't recognized on the Mac monitor.  I search the internet and it says "go tp system preferences, bluetooth etc" but if the keyboard and mouse aren't recognized how in the world can I go to system preferences?  I've even gone back tot he TV screen and it doesn't work now.  Batteries are all fresh and I'm stumped.  Any suggestions?
			
			 
				