Laptop computers running on any one of the Windows operating systems come with a great power-saving feature used to help enhance the battery life and give the user longer operating times when used without an AC power source. However, this power save mode also reduces some of the performance of the computer in order to accomplish the savings in battery life.
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Click on "Start" in the lower left-hand corner of the desktop. From within this menu, select "Control Panel."
Double-click on "Power Options" located inside the Control Panel.
Turn off the power saver plan by selecting one of the other power plans listed inside the Power Options dialog box. If there are no other power plans available, you can create one.
Create an alternate power plan by clicking on the "Create a power plan" link on the left-hand side of the Power Options dialog box. This will open another window allowing you to create a power plan of your own.
Select the type of power plan that you want, and enter a customized name for this plan. Once you have done this, click "Next." You will then be able to edit the plan's advanced settings to include how it handles the display, sleep mode and brightness settings under the battery and when it is plugged in.