How to change HDMI output resolution in Windows 7?

This is a new laptop Sony VAIO Y Series with Windows 7 Professional and a Samsung plasma TV.  Yesterday I connected my laptop and the TV with an HDMI-HDMI cable.  After that I went in Fn + F7 and selected "Projector" only, my desktop screen was successfully mirrored on my TV.   However, after I disconnected and then reconnected the cable, a dialog box appeared and asked me if I wanted to change my resolution of HDMI output.  While I felt fairly certain that my TV supports 720 or 768 only, I chose 1080 p.  (I realized it was a mistake.)  After doing this, the graphics in a video streaming box on MLB. TV is scrambled and very bad.

So, I think I have to set my resolution of HDMI output for 768 or 720, but I can't determine how to proceed.  I scoured the foundations of knowledge and electronic bulletin boards without result.  I searched through my display settings and resolution.  I have made a restore of the system for the day before my error, also to nothing does not.

When I right-click on the desktop and select 'Screen Resolution', then select the second (my TV) screen, the resolution drop-down list is 'greyed out', and I'm not able to change the setting, which reflects the 1366 x 768.

Can someone please?  Thanks in advance for your time.

Josh

Hello, Ithilias

Plug the HDMI and instead choose projector only, choose Extend.

Now, return to the screen resolution of the screen and you should be able to change the resolution of the display of the second.

David
Microsoft Answers Support Engineer
Visit our Microsoft answers feedback Forum and let us know what you think.

Tags: Windows

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