How to Get a Dell Dimension E521 out of Sleep Mode

Written by ruri ranbe
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The Dell Dimension E521 enters sleep mode when the computer has been inactive for a certain period of time. Sleep mode is also known as standby mode, and is sometimes mistaken for hibernation mode. When the desktop computer enters sleep mode, the hardware devices are placed in a low-power state, reducing power consumption.

The Dell Dimension E521 is easy to wake from sleep mode, but the computer might appear as if it's stuck in standby if the monitor is turned off or too dark.

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  1. 1

    Check the indicator lights at the front of the computer to confirm that the Dell Dimension E521 is on. The indicator light will flash green if the computer is in sleep mode.

  2. 2

    Check the indicator light on the monitor to confirm that the LCD screen is receiving power. The power button will flash on and off when the screen is in standby. Press the power button if the screen is off.

  3. 3

    Press a key on the keyboard or move the mouse to wake the computer from sleep mode. If the computer fails to wake, press the power button.

Tips and warnings

  • Press the "+" or up-arrow button on the monitor to increase the screen brightness if the computer doesn't appear to respond.

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