Solutions to common power problems

Here are solutions to some common problems related to power.

Show all

My computer goes into sleep mode if I don't use it after a short period of time.

To conserve energy, your computer goes into sleep mode after a short period of inactivity. To keep the computer awake longer, follow these steps:

To keep your computer awake longer

  1. Open Power Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, and then clicking Power Options.

  2. On the Select a power plan page, in the left pane, click Change when the computer sleeps.

  3. On the Change settings for the plan page, next to Put the computer to sleep, click the arrow button Picture of the arrow button, and then select a longer period of time.

    If you're using a laptop, you can change this setting for On battery or Plugged in, or both.

  4. Click Save changes.

After I put my computer into sleep mode, it wakes if I move the mouse.

You're probably using a USB mouse. If you want the computer to stay asleep when you move the mouse, follow these steps:

To prevent a USB mouse from waking your computer

  1. Open Device Manager by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, and then, under System, clicking Device Manager. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.

  2. In the list of device categories, double-click Mice and other pointing devices.

  3. Right-click the entry for the USB mouse, and then click Properties.

  4. On the Power Management tab, clear the Allow this device to wake the computer check box, and then click OK.

My laptop shuts down or goes into hibernation too soon after the low-battery notification appears, or the low-battery notification never appears.

The remaining charge on your battery might be very low, or your battery might not be holding a charge very long. By default, the low-battery notification appears when the charge reaches 10 percent, and a reserve battery warning appears when the charge reaches 7 percent. When the battery charge reaches 5 percent, you're at the critical-battery level and your laptop goes into hibernation. On a laptop with an older battery that has less storage capacity, a low-battery notification at 10 percent charge and the reserve battery warning at 7 percent charge might not give you enough time to save your work and log off. In this case, consider increasing the percentage of the Low and Reserve battery level setting.

To increase the low-battery level

  1. Open Power Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, and then clicking Power Options.

  2. On the Select a power plan page, click Change plan settings under the selected plan.

  3. On the Change settings for the plan page, click Change advanced power settings.

  4. On the Advanced settings tab, expand Battery, expand Low battery level or Reserve battery level, click On battery for both, and then click the arrow to increase the numbers.

  5. Click OK, and then click Save changes.

Note

  • If you set the low-battery level to more than 25 percent, Windows won't display a low-battery notification.

You can also change the action that Windows takes when your battery reaches the critical level.

To change what Windows does when the battery charge reaches the critical level

  1. Open Power Options by clicking the Start button Picture of the Start button, clicking Control Panel, clicking System and Security, and then clicking Power Options.

  2. On the Select a power plan page, click Change plan settings next to the selected plan.

  3. On the Change settings for the plan page, click Change advanced power settings.

  4. On the Advanced settings tab, expand Battery, and then expand Critical battery action. Click On battery, click the arrow, click the action that you want the computer to take, and then click OK.

Note

  • If the problems and solutions above don’t apply to your situation, the Power troubleshooter might be helpful. The Power troubleshooter checks things like your computer's timeout settings, which determine how long the computer waits before turning off the display or entering sleep mode. Adjusting these settings can help you conserve power and extend your computer's battery life.

    Open the Power troubleshooter by clicking the Start button Picture of the Start button, and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under System and Security, click Improve power usage. Administrator permission required If you're prompted for an administrator password or confirmation, type the password or provide confirmation.