Home > Uncategorized > Hardware: Getting your computer into Standby Mode

Hardware: Getting your computer into Standby Mode

Standby mode is also known as Suspend-To-Ram, ACPI (power state) S3. Unlike Hibernation, aka ACPI S4, Standby mode gives you an “instantly on PC,” since instead of suspending to disk (writing your current system state to allocated space), Standby… well… suspends to RAM. When you hit a key or move your mouse (w. the feature enabled) it will return your PC to the state you left it at in under 10 seconds.

If the world of computer was perfect, Standby would work immediately when you try it. Too bad computers never work properly.

There are several troubleshooting steps that should be taken to get your computer into Standby. Feel free to test Standby any time throughout the procedure. Attempt the steps in order as listed:

  1. Go into Device Manager (start>run>devmgmt.msc, expand “Computer,” does it say “ACPI Processor or Multiprocessor PC”? Refer to the next step, as you may need to enable it in the BIOS, then reinstall Windows. Actually, instead of reinstalling Windows, try to enable it in the BIOS, then downgrade/flash your BIOS (call manufacturer), then upgrade/flash your BIOS.
  2. Make sure that your BIOS has proper settings. Enable S3 power state, and the lowest fan speed should be set to “off.”
  3. Flash your BIOS with the latest image. Download from manufacturer’s web site.
  4. You may recieve a warning that a device, your mouse for instance, is not allowing your PC to enter Standby. In Device Manager, expand Mice… and go to properties. The fourth tab may be “Power Management,” go and uncheck “Allow this device to bring the computer out of standby.”
  5. In Device Manager, go into the properties of your device, then the Details tab. In the dropdown select “Power Capabilities.” This, obviously, lists the power states that the selected device supports. If D3 (refer to ACPI article) is not listed, then this device doesn’t support Standby. Exercise your index finder by doing this will all of the devices listed.

    Most devices sold within the past 10 years that are ATX compliant, support D3, and allow your PC to go into Standby. In other words, if you’re using something that doesn’t support D3, you should probably buy a new PC, let alone a new device.

  6. Your power supply fan is still on? Your power supply is cheap, go buy a newer one from somewhere that says it’s ATX compliant.

This should do it. If you’ve done all of the above and still can’t get your computer into Standby by any of the methods above, you may want to try a program called PassMark’s Sleeper. Try the following switches:

Sleeper.exe -D 0 -S0010 -H -E

If this doesn’t work, then your PC cannot be put in Standby. If it does work, but Windows Power Management will not work, you may try Step 1 above again; as this is the exact situation that I had, and doing Step 1 (of course after doing every single other step listed) is what worked for me.

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