I have tried everything I can think of to connect my Probook 4550s via hdmi cable to my lap top and no picture comes on the tv monitor:
I have tried the following:
1. change display settings to project on to 2nd screen, the result is no picture on the tv screen and no picture on the laptop when hdmi cable is inserted.
2. fn+f4, no change
3. check tv input is hdmi, no change
Please help