Lenovo ThinkCentre M51e (English) Quick reference guide - Page 47
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Code 8603 Description Pointing device error No mouse was detected. Action v Install a mouse. 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 beeps No on-screen message. Beeps Remove and reinstall the dual 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 by a series of short VGA) beeps If the problem persists, have the computer serviced. 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 short - 1 short configuration memory Reinstall the memory. If problem persists, replace the memory. Here are some general guidelines for working with POST beep codes: v Record any beep patterns that you hear. If you call for service, you will be asked for the beep patterns. v If the beep pattern is not in this book, more in-depth troubleshooting is required. Chapter 5. Troubleshooting and diagnostics 29