The past two mornings, the display on my iMac wouldn't come back up when clicking the mouse or keyboard as it has for the past 3 years.
The curious thing is that when I access it through Finder on my laptop, I can browse the iMac's files. But when I try to "Share Screen," it just hangs. Same when I try through the remote login service, logmein.
So the HDD is awake and I can hear it being accessed. And I can't bring it back up unless I hard shutdown the computer. This isn't happening during the day when the display goes to sleep; only after i goto bed and it has been asleep for a prolonged period.