It might be that you need the latest video drivers for your graphics controller since the driver contains HDMI codec drivers. Production drives linked below:
Additionally, please make sure to test different cables, if possible use straight cables, in others words, same end on both sides of the cable.
Hi Allan, thanks for the reply but I already installed the recommended driver and I also tried to connect a cable display port / display port without results
I feel incredible, some other solution?
See this URL Re: HD 4600 HDMI audio problem it mentions to try to update BIOS on post# 73
Additionally, I recommend contacting Lenovo Online Catalogue : Information > Contact Us for more information about this matter.