Hi, I've been trying for more than two months to get my notebook (Lenovo X-201 + Ultrabase) connected to my TV via HDMI cable 15m + Displayportadapter. Actually it does not work. I had a try with Ubuntu and at least went well with first connecting a 3m cable + Adapter and then switching to the 15m cable. So I can exclude, that one of the cables or the adapter is damaged. Back to Windows 7. After plugging in the 15m cable Windows set up an additional VGA display adapter, which is without function. (ImageShack® - Online Photo and Video Hosting ) So since then the 3m cable did not work either. I guess the main problem is that silly adapter, but I wasn't able to delete it yet. Fortunately you know how to do.