kamvas pro 16 display problem

Hi,

I just bought this tablet from amazon and just installed it. I believe everything is okay except the display screen. my computer recognizes the tablet and the pen (I can use the pen as the mouse to drag) and the touch slider works on my moniter. the only problem is that the display screen is black and says no signal. with antivirus off,  I tried uninstalling and reinstalling the program, restarting my computer, went into the black screen/no service thread, unplugging and replugging the cords. nothing worked. the power button stays red and i did try to reset the display with the osd function thing and still black screen.

please help

it's a Kamvas pro 16 GT-156 

serial number: B3DB9SH01294