I have a Dell XPS M1330 with Intel Core Duo 2 and my OS is Windows 7 64 Bit. I have tried downloading drivers, windows updates, virus scans, browsed different forums for a solution, but none of them worked.. My sound just isn't working and I don't know what to do next. My SigmaTel High Definition Audio Codec is working fine, but my Intel(R) High Definition Audio HDMI is not. This is the message I get "Windows cannot verify the digital signature for the drivers required for this device. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source. (Code 52)"
If anyone can help I'd really appreciate it.