Windows 7 and Vista come with a power management feature that can be used to conserve battery life. However, this feature can be disabled if you want to use the computer in a specific way. To disable power management on Windows 7 or Vista:

  1. Open the Control Panel.
  2. Click on Power Options.
  3. Under the General tab, click on Change plan settings.
  4. Under the Power Options for your type of device section, click on Change advanced power settings.
  5. On the next screen, under the Battery saver tab, uncheck the box next to Enable battery saver features and then click OK.
  6. Click Apply and then OK to save your changes and exit Power Options. ..

Disabling Power Management in Windows 7

Start by clicking on the power icon, and open up the More power options:

Under the “Additional plans” section, select High Performance, then “Change plan settings”:

Then change everything to “Never”, and save the changes:

Disabling Power Management in Vista

Disabling power management is simple and easy. First go to the start menu and click on the Control Panel.

Click on the System and Maintenance link:

Then click on the Power Options link:

Then select High Performance:

This will disable the automatic sleep mode, but will still turn off the display. You can click on Change Plan Settings to disable that as well if you want.