ATI Radeon HD 5700 - Triple monitor setup, unable to save

[determined]

I have this card, ATI Radeon HD 5700. Trying to hook up my LG TV using a display port adapter. So when I go to display settings, my monitor is found and shown with the 3 screens. So when I click on my TV and try to extend the display I get an error stating 'Unable to save display settings'. Please advise me on what I should be doing.

 

[D3LL]

Hi there,

Are you giving all the display's the correct resolution?

 

[determined]

What do you mean, they're all running as they should except for one which I had to force using the ati software. Two Samsungs are identical.

LG one won't let me set the resolution until I have the display active.