Megane MK3 - Can't Access Audio or Settings Menus

My car went on a bit of weird one the other day. Initially the Radio won't stop, even when the driver door was opened. I thought it would auto stop in 15/20 minutes as it used to. But nope, nothing. It kept going for some time. I checked the fuse for audio and lighter within the glove box but they are fine.

Then removed the connections to the battery for a few minutes and that did the trick. However I can't access the radio/settings or entertainment system menus now. Nothing works. Can't even change the clock.

Can anyone help please?

Megane MK3 - Can't Access Audio or Settings Menus