Getting a strange behavior from my 17R3, right after a clean install no less. I have it set to not go to sleep while on AC power, just turn off the screen after 5 minutes. Sometimes, the system will no longer respond after the screen is turned off. All the lights are still on, HDD indicator light will still flash occasionally. But it appears the system has crashed. Windows events state system has rebooted from a bugcheck. Only way to get it to respond is to press the power button (not press and hold) to shut it off then start up like normal. Any ideas?