This happens when you're trying to run the laptop screen and the TV at the same time. It's caused because the laptop screen and the TV are different resolutions. Very few laptops can run two different screen resolutions at the same time.
The TC-L32X1 supports a fixed range of resolutions. These are listed on page 24 of the user manual
http://shop.panasonic.com/shop/model/TC-L32X1?t=manuals&support#tabs The resolutions are [4:3] 640x480 and 1024x768, and [16:9] 800x480, 1280x768, 1366x768. I would recommend either 1366 x 768 or 1280x768.
What you do next is set the laptop so that it runs the TV only. It's slightly different between brands, but they all use a combination of the "Fn" key and maybe F4, or F5 or F8 or one of the function keys that has the monitor symbol. Press the Fn and the appropriate function key at the same time. The displays will cycle: laptop only -> laptop + TV -> TV only -> laptop only.
Once just the TV is getting a picture, you can use the laptop's graphics tab to change the resolution if the laptop hasn't already done this for you. This does vary depending on the operating system and the video card software. Try right clicking on the background image on the desktop and see if there's a
short cut to the Graphics Properties.
Hope this helps
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