New answers tagged wake-up
The no signal message on the monitor makes me think that it may be a connection problem between monitor and computer. It's possible that something may be heating up or shaking a connection loose. If your monitor is connected via VGA/HDMI cable, have you tried replacing the cable with a new/different one?
It seems that Windows can still be woken by a network adapter, even if its power management settings are set to not allow the device to wake the computer. In the advanced driver settings for some network adapters, there is a separate option to wake upon Magic Packet or Pattern Match. These were "enabled" on my machine... I suspect they were the problem. ...
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