"Mode not supported" Mac mini connected to LCD TV via HDMI

Hello, new mac min owner here (2.5) (September 2011). I followed the instructions in the "hello" booklet, including attaching peripherals, such as mouse and keyboard. I also connected a Samsung LCD TV via HMDI cable - as I propose to use this as my monitor. I then switchedn on the macmini, as directed in pages 11-16 of the macmini 'hello' handbook. Unfortunately I cannot even progress to the setup assistant as my TV just tells me that the "mode is not supported" through the HDMI cable. I assume that some output settings need to be changed in the macmini to accommodate the LCD TV output range.
My question is, how do I change these settings if the only screen I have is the screen that the macmini will not output to? Isn't this a massive oversight by Apple, given that a major selling point is the macmini's versatility?

What you are seeing, where you can't see the edges of the image, is known as "overscan".
This is something TVs have done forever to avoid seeing weird stuff at the edges of the transmitted frames.
The display control in System Preferences lets you turn overscan on or off (it is a checkable item in the "Options" panel). You might need to have this checked to display video, but you sure don't want it checked to use the TV as a computer display.
Although I have overscan OFF on my older Mac Mini, I've had the problem where sometimes after a restart the display is in overscan mode. To fix this, I can "guess" where the apple menu is off the top left of the screen, get to system preferences, check overscan to be on and then uncheck it to turn it back off. If you can't guess where the apple menu is successfully, you might try accessing the Mini from another Mac by using screen sharing. The shared screen looks correct even if overscan is on.

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Hi Sneuby,
Welcome to Lenovo Community!
As per the query we understood that you are facing issue on connecting to your Television from ThinkPad T440s.
Recently have you updated the system with any of the application or with drivers from Windows update?
Check uninstalling the Graphic driver from the system.
Please let us know the findings once you have performed the above steps.
Best regards,
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If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
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Mode not supported error on my mac mini help!!!

I have an 18 month old mac mini with a proview monitor.
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Hi Sneuby,
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Did someone help you today? Press the star on the left to thank them with a Kudo!
If you find a post helpful and it answers your question, please mark it as an "Accepted Solution"! This will help the rest of the Community with similar issues identify the verified solution and benefit from it.
Follow @LenovoForums on Twitter!

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Here is the standard Apple article that addresses this type of issue.
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If you think that rebuilding a Mac part by part is a viable option, please go ahead and rebuild it.
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"Mode not supported" Mac mini connected to LCD TV via HDMI

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