I've had an ongoing problem with EUEs that has recently exacerbated itself. In summary, I haven an 8600GT (no monitor attached) that kept EUEing and pausing for 24hrs, alongside an 8800GTX that folded fine (monitor attached) and an 8800GTS in another PC (monitor attached). Every time I rebooted the machine it would sometimes do another WU fine and at the end fail again and refuse to go any further. Anyways, I figured it may be a flaky card, not enough power, or something else, and in any case didn't have time to fix it and I had two other GPUs folding anyway. So now for good reasons that are irrelevant here, I have to make both PCs, and so all three GPUs, headless, and as soon as I did so this morning all three GPUs start EUEing. So I think aha must be a lack of monitor thing, and cobble together three dummy plugs with some 82ohm resistors and three DVI-VGA adaptors, restart both PCs and all three GPUs kick in and fold like the clappers... And then all three EUE again. Anyone any ideas? If it helps, the PC with the two gfx cards is Server 2003, and the one with the single card is running Win 7 Enterprise. No SLI is set up. Apologies in advance if I'm doing something obviously dim here, but Google isn't helping.