I connected my hdmi cable from my laptop to my tv but i get a no signal output f

I connect my laptop to my Sanyo tv and keep getting no signal what should i do?
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  1. You switched the TV to HDMI as the source right?, you can also try to go into control panel, or right click your desktop and go to the "screen resolution" area and hit "detect" and see if it comes up.

    The port might even be disabled in BIOS.
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