You cannot set your PC video resolution to 1920x1080 @60Hz?
Per user manual:
1. Set computer to a resolution supported by your HDTV (see
Preset PC Resolutions). If your
computer supports it, we recommend 1920x1080 @60Hz.
2. Turn off the power to your HDTV and Computer.
3. Connect the VGA cable from your computer to the
RGB PC jack on your HDTV.
4. Connect the 1/8-inch audio cable from your computer to the RGB PC
Audio jack on your HDTV.
This step is optional and only needed to transmit audio from the computer through the TV.
5. Turn on the power to your HDTV and computer.
6. Select
RGB using the
INPUT button on the remote control or side of your HDTV.
Note: Refer to your PC computer user manual for more information about the video output requirements.
http://www.fixya.com/support/r4873371-fixing_out_range_format_not_supported
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