I have just installed the above board, and everything appears to be OK, until I installed the EasyTune III overclocking facility. The board clocks great, but after cloking the board, the 'on board' sound card (SigmaTel AC97)does not function correcrly, everytime a sound file is played a hiisng noise erupts from the speakers. I have not found any updated drivers. This board uses the Intel 815 chipset........any ideas please? Thanks for reading this.