why wont my sanyo 50in tv show or play anything with my laptop hooked up via.hdmi cable

[Shannon_7]

i get nothing when i put my laptop on hdmi cable to the tv i have it on duplicate and have nothing still

 

[COLGeek]

On the TV, did you change to the HDMI input that the laptop is connected to?

 

[Akbar_3]

Yo try pressing fn and f1 on your dell laptop and go on secondary screen only
it dosent work for some but it normaaly does work just try it