Lenovo TC A51-8122, 8131, 8124, 8138, 8123, 8137 Post beep codes, Beep pattern Description Action

Code	Description	Action
8603	Pointing device error	v Install a mouse.
	No mouse was detected.	Or
		v Set the mouse option correctly
		using the Setup Utility.
		If you cannot correct the problem,
		have the computer serviced.

POST beep codes

Another way for POST to notify you of errors is through a series of audible beeps. A beep pattern represents a numeric value and provides further information about the location of a potential problem.

The following are the most common POST beep codes that you might hear when starting your computer.

Beep pattern	Description	Action
1 long and 2 short	No on-screen message. Beeps	Remove and reinstall the dual
beeps	occur before video	inline memory modules
	initialization.	(DIMMs).
		If the problem persists, have the
		computer serviced.
1 long beep followed	External ROM failure (such as	If the problem persists, have the
by a series of short	VGA)
		computer serviced.
beeps
2 short beeps	A POST error occurred.	If you have changed the
		hardware configuration, go into
		the Setup Utility and exit to save
		setting. Otherwise refer to error
		code section to resolve error.
1 short - 3 short - 3	No memory or no	Reinstall the memory.
short - 1 short	configuration memory	If problem persists, replace the
		memory.

Here are some general guidelines for working with POST beep codes:

vRecord any beep patterns that you hear. If you call for service, you will be asked for the beep patterns.

vIf the beep pattern is not in this book, more in-depth troubleshooting is required.

Chapter 5. Troubleshooting and diagnostics 29