I have a E350 based HTPC that used to run XP, no problem, everything ran well.
Decided to upgrade to Windows 7 64 bit, but suddenly the PC starts to freeze randomly. Turns out the culprit is the realtek HD audio driver. Windows 7 pre installed audio driver would work but then freeze after a few sec/minute playing. If I disable the audio driver the HTPC would ran flawlessly.
I tried installing audio driver from gigabyte, and from realtek but both produce error during installation process (something about there's already an ongoing installation process already) - I did a hard reset during installation once (because the pre-installed audio driver froze my pc).