Realtek Driver 2.35 issue

I recently updated to Windows 7 64-bit after using XP 32-bit for years. Previously I was using the Realtek driver HD 5.10.0.5506, audio codec ALC883, and the sounds levels were fine. However since moving to Windows 7, and downloading the most recent 2.35 HD driver, the volume levels have been very inconsistent. When a loud part of a track plays for instance, the levels dips a lot. Once it reaches a quieter part, it then obviously rises. This up-and-down of volume is constant, and makes listening to music or watching movies impossible.

My PC is custom built, and the MB is an ASUS P5E-VM SE. I uninstalled all sound drivers from the device manager, and installed the new 2.35 driver.

Any help is most appreciated. I've attached a full Everest report:

View attachment Report.txt

 

I've figured out what was causing the problem, but still no luck with fixing it. Seems that when I turn on the graphic equaliser using WMP 12, especially increasing the treble, the sound levels drop a lot. I've no idea why this is happening, as all the other media players are working fine. Any ideas anyone???