U330 - Intel X4500MHD not recognizing external display

I have the U330 (win7 x86) fully updated and an LCD w/ max resolution of 1920x1080 and dvi/vga ports
The issue that I have is that when using the intel x4500mhd via the hdmi dvi cable, it does not recognize the monitor. It works if I use the ATI card, but it is louder than the Intel counterpart, so I would like to get use the Intel if possible. I tried rebooting, unplugging hdmi dvi cable, bu **bleep** doesn't work. The lcd is set at its native resolution/refresh rate.
Now, I thought that maybe each graphic card use a different port, intel=vga, ati=hdmi, and that's why i'm not seeing anything, but i'm just guessing
Any help?

check bios and/or graphic drivers updates, if it's available, try to flash/update them first.
http://consumersupport.lenovo.com/uk/en/DriversDownloads/drivers_list.aspx?CategoryID=16

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