HDMI cable from PC to TV 'No Signal'

I've just got a new graphics card after my old one burnt out, and I've been trying to connect my PC to my television. For my old graphics card I used a DVI to VGA cable, but I've been unable to get a replacement for that. I've tried both HDMI to HDMI and DVI to HDMI, and the TV doesn't seem to register it at all, it always comes up as 'no signal'
I'm really not sure what the problem is, any help would be appreciated.
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  1. Best answer
    Can you get into the TV menu screens to select/verify input port?

    Have you tried another known working HDMI cable?

    Will the TV work as a monitor on another computer?

    Double check all of the configuration settings on the new GPU - make sure you are and can match the TV.

    It will also be useful if you can post the TV make and model and the same for the GPU. Thanks.
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