Can't Get my PC to run on my TV at 60Hz (only 30Hz)

[Protongog]

Hoping some on can help. I have a Dell OptiPlex 3040 connected to my TV and also an Amazon Fire cube TV, i am using both to stream Moonlight from my gaming rig. The Fire Cube does a good job but has  annoying lag on the controls. I have been experimenting with the OptiPlex and it does a good job but it will only run at 30hz which is causing realy bad tearing. 

Optiplex to TV  30hz

Fire Cube to TV 60Hz 

Optplex to monitor 60Hz

Is there a setting i could use to force the TV to 60Hz with the SFF computer. I am Using HDMI for all connection and have tried different cables ETC.

[lieder1987]

What graphics card are you using on the OptiPlex?

[Protongog]

6 minutes ago, lieder1987 said:

What graphics card are you using on the OptiPlex?

The onboad processor graphics. It works on a monitor but not when connected to the TV