It seems possibly similar to the issue in this thread from a couple months ago, except I don’t shut down my computer. It’s always on when this happens.
Every few weeks, I’ll wake up and my Windows 7 desktop computer will be in limbo. Like it’s sleeping, the power button is flashing, but it won’t respond at all to keyboard or mouse input. The fans are clearly running too. Unplugging/replugging in the mouse or keyboard does nothing. My only recourse is to hold the power or reset button down on the box.
I have it set up to never sleep, just turn the monitor off after 5 hours. I have updates set to check with me before downloading and installing, so it’s none of that (and the first time it happened I accidentally had it set up to never even check).
I checked the event log, and there’s a “critical power failure” event from the kernel at each time I’ve encountered this, but the curious thing is that they’re all from when I woke up that day. They’re logging me hard resetting it with the power button – it has the power button press and says the computer was NOT in sleep mode when it lost power. This means that the OS was running well enough to log me manually hard resetting it, but not well enough to respond to anything.
It’s not a huge deal, except it makes me lose my Chrome tabs and may some day corrupt a file or something. Can anyone think of why this might be happening and how to fix it?