my curtis 42 inch tv saysno signal from my toshiba computer

If the video resolution of your computer is not compatible with the TV you won't get a picture. Set the computer to the native resolution of the TV.
Try a different HDMI input on the TV.
The HDMI cable can affect whether you get a picture.
The order you boot the computer and select the input it's connected to can affect it too.
 
If the video resolution of your computer is not compatible with the TV you won't get a picture. Set the computer to the native resolution of the TV.
Try a different HDMI input on the TV.
The HDMI cable can affect whether you get a picture.
The order you boot the computer and select the input it's connected to can affect it too.
 
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