Weird Problem I'm Having with my Custom Computer

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J

Jrmchugh

Honorable
Nov 21, 2013
13
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10,510
So the other day I started having this weird computer problem when my custom Windows computer automatically goes to sleep. After leaving my computer alone for a few hours I will go back to use it and it will appear to be asleep, but it will not respond to me pressing buttons on the keyboard or the power button. For some reason when I hit the power switch on the PSU and leave it off for a few seconds and then turn the PSU switch on again I am able to turn the computer back on via the power button and it starts up exactly where it was before going to sleep. This is a very weird problem that I have never seen before. I recently did a clean restore and updated my computer to Windows 8.1

Build:
Windows 8.1 Operating System
AMD 8350 Processor
Evga GTX 780 SC ACX Graphics Card
Corsair GS-600 PSU
Gigabyte GA-990FXA-UD3 Motherboard
Cooler Master Elite 431 Plus Case
8 Gigabytes Crucial Memory
Seagate 2000DM001 Hard drive
Toshiba DT01ACA050 Hard Drive
[video="https://www.youtube.com/watch?v=fr_rINwWJ0k&feature=youtu.be"][/video]
 
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C

Coruonel

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Apr 24, 2015
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4,520
I think you might have "hibernate" enabled, right click on the desktop, go to personalize > screen saver > Change power settings > Change Plan Settings (the one that is selected) > Change Advanced Power Settings

In this new box you see all sorts of stuff you can select, just expand the + next to "Sleep" and tell windows to NEVER sleep or Hibernate.

Hibernate does terrible things to your PC. Don't ever use it.

Feel free to make any other changes you want in this menu, you won't really hurt your PC if you do. Hope this helps
 
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Dark Lord of Tech

Dark Lord of Tech

Retired Moderator
Aug 18, 2009
128,614
1,778
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Haswell compatibility issue?


When an Intel Core (i3, i5, i7) processor is idle, it goes into a sleep state that requires less power than when the CPU is active. Since the motherboard voltage regulation modules that provide power to the CPU gets their power from the power supply's +12V rail, these sleep states can dramatically reduce the load on the power supply's +12V rail.

According to Intel's presentation at IDF, the new Haswell processors enter a sleep state called C7 that can drop processor power usage as low as 0.05A. Even if the sleeping CPU is the only load on the +12V rail, most power supplies can handle a load this low. The potential problem comes up when there is still a substantial load on the power supply's non-primary rails (the +3.3V and +5V). If the load on these non-primary rails are above a certain threshold (which varies by PSU), the +12V can go out of spec (voltages greater than +12.6V). If the +12V is out of spec when the motherboard comes out of the sleep state, the PSU's protection may prevent the PSU from running and will cause the power supply to "latch off". This will require the user to cycle the power on their power supply using the power switch on the back of the unit.

While we are still working with Intel on the details of the testing methodology they use to check PSUs for Haswell compatibility, it is already known that a power supply that uses DC to DC for the non-primary rails (the +3.3V and +5V) will not have an issue with the new low power sleep states. This is because a DC to DC buck converter is used to convert +12V to +3.3V and +5V. This means that no matter what load the CPU puts on the power supply, there will always be a load on the +12V because the +12V is required to provide power to +3.3V and +5V.

Corsair utilizes this DC to DC technology in most of their power supplies. Starting with the CX750 and CX750M and moving all of the way through the GS Series, TX and TX-M Series, the HX Series, both the AX Series Gold and AX Series Platinum, and the new AXi Series. So whatever your budget, if you choose Intel's new Haswell processor and wish to utilize the new, low power C7 sleep state, Corsair has a power supply for you.

http://www.corsair.com/en-us/blog/2013/may/haswell-compatibility-with-corsair-power-supplies
 
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J

Jrmchugh

Honorable
Nov 21, 2013
13
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10,510


I put the sleep mode to "never", but hibernate was already on "never". Turning sleep off will no doubt fix the problem, but it is still very odd that after completely cutting power to the PC it turns back on exactly where it was.
 
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