NUC fault or not

I purchased an i3  NUC last week, I added 2 X 4 GB's Crucial lmemory and a M.2 250 GB Crucial SSD drive.

I could not connect it up to my monitor as it has a DVI connection.

I ordered a MDP to HDMI, VGA DVI adapter, which arrived this morning.

When I connected it up to the NUC their was no signal to the monitor, so I got an old monitor which has a VGA connector and tried that which also said their was no signal.

The adapter is brand new, is it possible it is faulty or have I missed something basic.

Any advice appreciated.