So I have an alienware m14x laptop which I had connected with an older 22 inch hp monitor with hdmi and there was sound and everything was fine. But now I recently got the BenQ XL2420T 24 inch monitor which replaced the old one and I connected it via the same hdmi cable, updated drivers and did all that but no sound comes out of it? Everything else works fine so I am really confused as to what the problem is.