I bought Dell laptop 7000 7280 Notebook on Nov. 22nd. The laptop came in very clean. I tested hard drive, RAMs and two USP ports before Christmas and like it! But I just discovered the HDMI port doesn't work. I double checked cable and monitor with another another two laptops, and confirmed this HDMI port doesn't work. I already bought and download one-time installation of MS Office on this laptop and don't want to return it. Not sure what to do now?