I have got my new Windows 8 Dell Inspiron 15 laptop. It does not have a VGA port and I do a lot of presentations where I need to connect to projectors at my client's offices. So I purchased a HDMI to VGA adapter cable. But when I tried to connect to a projector, the projector indicate the massage that no signal. I lowered the resolution on the display to 1024 x 768 (the lowest available on my laptop), but it still didn't work. I had to borrow a client's laptop to do the presentation. Can you help?