I rebooted my MacBook today and it has re-booted with larger icons. Does anyone know what the cause of this was? I rebooted by holding down the power key. It is almost as if it is running in safe mode on a PC where it makes everything larger including icons on the dashboard and when i open any folder such as the application one, and the top bar is larger too. My desktop changed from the normal widescreen to a square fit. It's definitely not zoomed in and the only way i can get it back to looking normal is running it in safe mode but obviously i don't want to have to do this every time! This is my first Mac so i'm a little worried. If anyone could help me in the slightest way i'd be very grateful.