|I have no experience with these devices, but looking at the manual - download here - |
It seems to have a single hdmi output ?
So not clear on your hdmi 1, 2, 3,
Are these referring to three inputs on your flatscreen tv (lcd/ledplasma)?
What make and model is your tv?
Also what make and model laptop?
Likely others here will be somewhat more familiar with the "box" you've bought - and my odd queries may help them answer your call for help (CFH) more easily?