Find the right TV input
You need to select the TV input (or source) you stuck the HDMI cable into
From the TV remote control, click on the button called Source
Choose from the list of inputs displayed (it will be called something like HDM1 or HDM2 …)
If you don't know the name of the source you used, try the first in the list, wait for 5 seconds, then try the next.
Once you have selected the correct TV source, it will display the same picture as your tablet or laptop is showing.
Make a note of the source name.