Dell W07B Troubleshooting Your Computer, Important Information Diagnostic Power LED Codes

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Troubleshooting Your Computer

You can troubleshoot your computer using indicators like Diagnostic Lights, Beep Codes, and Error Messages during the operation of the computer.

Important Information

NOTE: Avoid using the touchscreen in dusty, hot, or humid environments.

NOTE: Sudden change in temperature may cause condensation on the inner surface of the glass screen, which will disappear after a short time and does not affect normal usage.

Diagnostic Power LED Codes

The power LED states are shown in the following table.

NOTE: The power LED can only serve as an indicator of the progress through the POST process. These LEDs do not indicate the problem that caused the POST routine to stop.

Power LED	Description
OFF	Power is off. LED is blank.
Blinking Amber	Initial state of LED at power up. Refer the following table for Blinking Amber Power LED
	diagnostics suggestion and possible failures.
Solid Amber	Second state of the LED at power up. Indicates the POWER_GOOD signal is active.
Blinking White	System is in a low power state. Does not indicate a fault condition.
Solid White	The computer is in power-on state.

The power LED light blinking amber pattern will help you determine a few failures as shown below. The Amber LED blinking pattern is as follows: the pattern is 2 or 3 blinks followed by a short pause then X number of blinks up to 7. The repeated pattern has a long pause inserted in the middle. For example 2,3 = 2 amber blinks, short pause, 3 amber blinks followed by long pause then repeats.

Blinking Amber	Problem Description
Power LED
2,1	The motherboard may be faulty.
2,2	The motherboard, power supply or power supply cabling may be faulty.
2,3	The motherboard, memory or processor may be faulty.
2,4	The coin-cell battery may be faulty.
2,5	The system may be in recovery mode. Download and install the latest BIOS from
	support.dell.com/support.

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