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Computer won't wake from idle/sleep

Last response: in Systems
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July 16, 2013 4:53:00 AM

I built my own rig about 7-8 months ago, and after a slew of initial problems (mostly self inflicted) its been running fine. Then I moved in to my new house.

About 50% of the times that I allow the computer to enter sleep mode by not touching it for an hour, when I go to wake it up, it does nothing. Pushing the power button also does nothing. The numlock button on my keyboard remains lit, but otherwise, its as if it were not connected to a power source.

So I unplug the cable from my PSU, flip the power toggle on the PSU, and let them sit for about 15 seconds, plug it back in and reflip the switch, and boom! It boots back up.

The weird part though, is that it then tells me it is 'resuming Windows' and once it loads, my user account is still logged in and whatever application I was using when I left it is still up, just like it had woken from sleep normally. However, the computer is unbearably slow at this point, and requires a reboot before it is useful again.

I haven't been able to find anything similar to this in my brief Google searches, but hopefully someone here can help an admitted homebuild noob out? Thanks in advance!
July 16, 2013 4:56:38 AM

Sorry, forgot specs.

Windows 7 Ultimate SP1 (64 bit)
AMD Athalon quad 3.0 gHz CPU
16gb DDR3 RAM
Radeon HD 6670 GPU
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July 16, 2013 5:18:25 AM

On my old PC I had a similar problem and I thought that it was linked to the Radeon GPU (I cannot remember which model it was as the PC is now at the county recycling yard). I tried updating the driver and the AMD control software and nothing seemed to solve the problem. It was intermittent as well. I don't think that the issue was that the computer did not wake up from sleep but rather that the display wouldn't. Of course you cannot see the mouse at all :-) . The only thing that solved the problem was to use the Windows keyboard command to restart the computer (my unit did not have a reset button). Tap the 'Windows Key' and then the right arrow twice and hit enter. This will restart the PC. If you only hit the right arrow once and then enter it will shut down. Note that these are sequential key taps.
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July 16, 2013 5:21:39 AM

It sounds to me like the PC is going into sleep/hibernation mode which i believe is on by default after the installation of windows. That would explain why when you finally get back to the desktop again it opens all your previous applications etc. The second issue you may want to check to see what your power features are set for. There should be an option to choose what happens when you press the power button in windows it could also be that the power connections to the mother board may not be correct.
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July 16, 2013 11:27:26 AM

neieus said:
It sounds to me like the PC is going into sleep/hibernation mode which i believe is on by default after the installation of windows. That would explain why when you finally get back to the desktop again it opens all your previous applications etc. The second issue you may want to check to see what your power features are set for. There should be an option to choose what happens when you press the power button in windows it could also be that the power connections to the mother board may not be correct.


I was thinking the same thing about the motherboard power connections, but I don't understand why it worked perfectly at the old place and not so at the new one. Regardless, I'll check under the hood and tighten everything up. Thanks for your responses I will repost if this solves the problem!
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August 20, 2013 8:02:52 PM

Try this: After about a week the Microsoft Hotfix stopped working and all the usual shutdown, sleep, boot issues returned. After a lot of messing around I tried removing my graphics card (Asus GTX660 Ti) With the card removed the problems went away, put the card back in the problems returned. Soooooo to cut a long story short, I put the Graphics Card Back in and set my Windows sound scheme to 'NO SOUNDS', the pc now shuts down, sleeps, awakens no problems. My theory is the PC shuts down and or goes into sleep mode before the Graphics card gets a chance to 'power off' leaving it in a Limbo state. It's been over a week now and the PC is still fine.
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