iMore

I have the latest Apple TV, Mac Book Air and Ipad ? when I pair my Ipad with Apple TV (all gadgets bought recently) everything works fine and can clearly see everything being played on my Ipad ? however when I try to do the same with Mac Book Air, once I switch to MBA, the TV screen goes black (no picture, no sound) ?. after approximately 30-45 sec the TV turns up again with Apple TV welcome screen ? From time to time I managed to see screen of Mac Book Air when pairing with Apple TV but the picture is static (frozen) with no movements and changes every 20-30 seconds again to be static ? I would really appreciate if someone could help me ?. Many thanks!