Dell OptiPlex N Diagnostics and Troubleshooting Guide (.pdf) - Page 33
System Beep Codes, the Diagnostics Checklist found in Getting
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Table 2-1. System Messages (continued) Message Cause Action Warning Thermal Probes failed. At system start-up, the BIOS has detected that one or both of the thermal probes in the computer are nonoperational. You can continue to use the system, but be aware that the temperature probe(s) are disabled and a processor overheat condition will not warn the Thermal Shutdown service to shut down the system. NOTE: The Pentium® Pro microprocessor has a built-in thermocouple that halts microprocessor operation if the microprocessor exceeds its rated temperature. To correct this problem, you must replace your system board. For technical assistance, see Chapter 7, "Getting Help." Warning Temperature is too high. At system start-up, the BIOS has detected that one or both microprocessors are overheated. After displaying this message, the BIOS halts the processes and turns off the system. Let the system cool down before attempting to restart it. Write fault Write fault on selected drive The operating system cannot write to See "Troubleshooting the Diskette/Tape Drive the diskette or hard-disk drive. Subsystem" in Chapter 6. NOTE: For the full name of an abbreviation or acronym used in this table, see the abbreviation and acronym list that precedes the Index. System Beep Codes When errors occur during a boot routine that cannot be reported on the monitor, your computer may emit a series of beeps that identify the problem. The beep code is a pattern of sounds: for example, one beep, followed by a second beep, and then a burst of three beeps (code 1-1-3) means that the computer was unable to read the data in nonvolatile random-access memory (NVRAM). This information is invaluable to the Dell support staff if you need to call for technical assistance. When a beep code is emitted, write it down on a copy of the Diagnostics Checklist found in Chapter 7, "Getting Help," and then look it up in Table 2-2. If you are unable to resolve the problem by looking up the meaning of the beep code, use the Dell Diagnostics to identify a more serious cause. If you are still unable to resolve the problem, see Chapter 7, "Getting Help," for instructions on obtaining technical assistance. Messages and Codes 2-9