Power Save mode is one of the many power settings available for computers running the Windows operating system. This mode is designed to conserve as much battery power as possible, so it may cause your computer to run slower.
Click "Start," "Control Panel" and then "Power Options."
Select the power setting you would like to use. You can also make changes to the options of a particular setting by clicking "Change Plan Settings."
Click "Apply." This will turn off Power Save mode and turn on whichever option you selected.