•Ensure that the electrical outlet is working by testing it with another device, such as a lamp.
•Ensure that the power supply light on the back of the computer is on. If the light is off there may be a possible problem with the power supply or the power cable.
If the problem persists, contact Dell (see “Contacting Dell” on page 53).
If the power light is solid white and the computer is not responding — The display may not be connected or powered on. Ensure that the display is properly connected and then turn it off, then back on.
If the power light is blinking white — The computer is in Sleep state. Press a key on the keyboard, move the mouse or a finger on the touch pad, or press the power button to resume normal operation.
Solving Problems
If the power light is solid amber — There may be a problem with either the system board or the power supply. For assistance, contact Dell (see “Contacting Dell” on page 53).
If the power light is blinking amber — There may be a problem with the system board. For assistance, contact Dell (see “Contacting Dell” on page 53).
If you encounter interference that hinders reception on your computer — An unwanted signal is creating interference by interrupting or blocking other signals. Some possible causes of interference are:
•Power, keyboard, and mouse extension cables.
•Too many devices connected to a power strip.
•Multiple power strips connected to the same electrical outlet.
29