(and most active converters without a separate power input are in flagrant violation of the HDMI specs, by using more than the official maximum of 50 mA)
AFAICT, the HDMI spec sets a minimum of 5V, 50mA on pin 18. Where do you see the listing for the maximum amperage?
you need something like this: http://amzn.eu/9QFPB7z
I bought something similar as well, mostly because my previous HDMI -> VGA converters were incompatible with HDCP. Literally the only thing that I use that has HDCP is my PSTV. *shrug* I'm not sure if/when Windows incorporates HDCP, but that's something that Johnton should also be aware of. :/