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Is your monitor plugged into the graphic card?
Have you installed the Nvidia driver yet?
http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk
it says no signal on my monitor when i plug it into the graphics card
also
when i try and install the drivers this (http://imgur.com/j6y8vLj) happens
You can only install the drivers if you using the gpu as the primary display output, not the motherboard.
You won't be able to use your gpu fully if you can't install the driver
Turn off your pc. Change the monitor cable so it connects to the gpu. Try again.
Try reseating the graphic card. You can try to reset the BIOS.
What is your pc specs? What power supply?