Dell 755 manual System Lights, 345, Power Light Problem Description Suggested Resolution

•If the power light is off, the computer is either turned off or is not receiving power.

–Reseat the power cable into both the power connector on the back of the computer and the electrical outlet.

–If the computer is plugged into a power strip, ensure that the power strip is plugged into an electrical outlet and that the power strip is turned on.

–Bypass power protection devices, power strips, and power extension cables to verify that the computer turns on properly.

–Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

–Ensure that the main power cable and front panel cable are securely connected to the system board (see the "System Board Components" section for your computer).

•If the power light is blinking amber, the computer is receiving electrical power, but an internal power problem might exist.

–Ensure that the voltage selection switch is set to match the AC power at your location, if applicable.

–Ensure that the processor power cable is securely connected to the system board (see the "System Board Components" section for your computer).

•If the power light is steady amber, a device may be malfunctioning or incorrectly installed.

–Remove and then reinstall the memory modules (see "Memory" on page 313).

–Remove and then reinstall any cards (see the "Cards" section for your computer).

•Eliminate interference. Some possible causes of interference are:

–Power, keyboard, and mouse extension cables

–Too many devices on a power strip

–Multiple power strips connected to the same electrical outlet

System Lights

Your power button light and hard drive light may indicate a computer problem.

Power Light	Problem Description	Suggested Resolution
Solid green	Power is on, and the computer is	No corrective action is required.
	operating normally. On the desktop
	computer, a solid green light indicates
	a network connection.

Blinking green	The computer is in a power-saving
	mode.

Press the power button, move the mouse, or press a key on the keyboard to wake the computer.

Solving Problems

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