Hi all - I've searched around for this issue but haven't quite found one which is the same. I'm running 64-Bit W7, and my computer seems to go to sleep/hibernate randomly, for no particular reason. Like, I could be in the middle of typing an e-mail (hence obviously the computer is detecting input), and it will just power off. As if this isn't annoying enough, when I try to wake the computer (by hitting the power button), the computer "wakes up" in that it powers on, but it never fully recovers - my monitor just says "no signal". The only way to recover from this is to disconnect/reconnect from mains power, and then power on again. At this point, the computer boots fine (but says "Resuming Windows" rather than "Starting Windows"). I have a suspicion that it *might* be something to do with automatic updates which have a restart pending, though that's really just a theory. Any advice? I've checked the power savings/sleep settings, and they seem fine - though as I said, since it can happen while I'm in the middle of using the computer, I don't think the problem lies there. Also, I'm running the latest drivers for everything I can find, so I don't think that's the issue. Thanks in advance!