Also, a suggestion that search did not yield for me. C1E setting is in the debug menu along with the "watchdog". After a few boots with updated BIOS, read added watchdog, I realized that everytime I loaded "optimal defaults" from the BIOS, C1E was re-enabled along with watchdog. So I saved a custom default by putting the failsafe/debug/clearCMOS jumper on, booting, loading optimal defaults, turning off C1E-EIST-watchdog and saving to custom. This saved me a ton of time getting my overclock going on this board and I don't have to put the damn jumper on to know that those three critical overclocking settings are off.

I just switched back to an Intel board for my desktop/workstation from the P5W-DH because Vista 64 really likes the RealTek SPDIF output for the home theater system better than the 975XBX(1) for sound. It actually produces "bit perfect pcm" when in "exclusive" audio mode and sounds better, to me at least, than the Sigmatel did. Also, everything worked right out of the box including video drivers. I did go ahead and install the Catalyst for Vista and surprisingly, they look great on the big screen. Better than the Nvidia drivers did for the proprietary MS MPEG codec built into Vista. I will probably put an Nvidia back in that system when/if they release an MPG2 pure video codec. On another positive note for ATI and Vista 64 media Center, the whole Catalyst package seems to be there. Overclocking and ViVo etc. No 3D preview, but reverse telecine, color adjustments etc are all there. There are noticeable "greyed out" areas in all OpenGL dialog boxes though. I assume this is related to MS initial position that they would retain the openGL wrapper and OEM's should write to DirectX for calls to openGL. I am not a developer so don't take what I say about development as the gospel, but I am a senior infrastructure architect and topology, security, assest allocation/management and OS deployment are part of my core competency.