Dell Precision 490 Desktop User Manual

Also see for Precision Workstation 490: Quick reference guide Quick reference guide Quick guide Specifications

Contents

Error MessagesFill out the Diagnostics Checklist as you complete these checks.If the message is not listed, see the documentation for the operating system or the program that was running when the message appeared.4-2-2 Shutdown failure4-2-3 Gate A20 failure4-2-4 Unexpected interrupt in protected mode4-3-1 Memory failure above address 0FFFFh4-3-3 Timer-chip counter 2 failure4-3-4 Time-of-day clock stopped4-4-1 Serial or parallel port test failure4-4-2 Failure to decompress code to shadowed memory4-4-3 Math-coprocessor test failure4-4-4 Cache test failureCAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.A filename cannot contain any of the following characters: \ / : * ? " < > | — Do not use these characters in filenames.A required .DLL file was not found — The program that you are trying to open is missing an essential file. To remove and then reinstall theprogram:1. Click the Start button, click Control Panel, and then click Add or Remove Programs.2. Select the program you want to remove.3. Click the Change or Remove Program icon.4. See the program documentation for installation instructions.Alert! CPU Fan Not Detected — Ensure that the cooling fan and airflow shroud are properly installed and working.Alert! Previous attempts at booting this system have failed at checkpoint [nnnn]. For help in resolving this problem, please note thischeckpoint and contact Dell Technical Support — Contact Dell and report the checkpoint code (nnnn) to the support technician (seeContacting Dell).Alert! Previous Fan Failures —Alert! Previous Processor Thermal Failure —Alert! Previous Shutdown Due to Thermal Event —Ensure that nothing is blocking the airflow vents and that all the fans are properly installed and operating correctly. Also, ensure that theprocessor heat-sink assembly is properly installed.Alert! Previous Reboot Was Due to Voltage Regulator Failure — Contact Dell for assistance (see Contacting Dell).Alert! System Battery Voltage is Low — Replace the battery (see Battery).Alert! Unable to Initialize all Installed Memory —Alert! Uncorrectable Memory Error Previously Detected in DIMM_X/Y —See Memory Problems.