Black Display

Notes

The NTB will put an image on a Display Device (e.g. a Plasma or LCD TV) and NOT on your PC. (Please explain in a separate window)
You need to determine if the NTB is producing a "VGA" signal or not.

Get a computer monitor, preferably the old, glass CRT type and not a modern LCD type.
Connect the monitor to a computer to make sure that the monitor is not faulty.
Unplug any S-Video or Composite output cables that may be connected to the NTB (yellow sockets).
Unplug the Plasma / LCD / projector from the VGA socket on the NTB.
Plug the monitor to the VGA output from the NTB.
The VGA socket is on the back of the NTB, it is blue and has 15 holes and it is impossible to plug the monitor into anything else by accident.
If an NTB100 series then plug a keyboard into the purple jack.
Restart the NTB by pulling the power cable out and putting it back in again.
If an NTB3000 series then skip the remaining steps.
Press the "Delete" key repeatedly until the "BIOS" setting page appears on the computer monitor.
The BIOS setting page is blue with yellow text.
If nothing appears on the computer monitor then skip the remaning steps.
If the NTB seems to be booting up without showing the BIOS page then try pulling the power out and putting it back in again but start pressing the delete key immediately.
In the BIOS page, use the down arrow key to select "Advanced Chipset Features" and press the Enter key.
Use the down arrow key to go to "Select Display Device" and press the "Page Up" key until "CRT" has been selected.
Press the F10 key and then the "y" to save and exit.

If you saw lines of text appear on the computer monitor then the NTB is producing a VGA signal.
If nothing appeared on the computer monitor then the NTB is not producing a VGA signal.