Dell Dimension 2350 User Guide - Page 2

Back to Contents Page Advanced Troubleshooting Dell™ Dimension™ 2350 Series Diagnostic Codes Beep Codes System Messages Dell Diagnostics Drivers Using System Restore Resolving Software and Hardware Incompatibilities Reinstalling Microsoft® Windows® XP Diagnostic Codes To help you troubleshoot a problem, your computer is equipped with four lights on the back panel labeled "A," "B," "C," and "D." These lights can be yellow, green, or off. When the computer starts normally, the lights flash. After the computer starts, the lights remain green. If the computer malfunctions, the color and sequence of the lights identify the problem. CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in your Owner's Manual. Diagnostic Code Definition Corrective Action The computer is in its normal off condition or a possible preBIOS failure has occurred. Ensure that the computer is connected to a known working electrical outlet, and then check whether the front-panel power light on the power button is on or off. If the power light is off, check the power supply. If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. The computer is in a BIOS failure recovery mode. See the safety instructions in your Owner's Manual, and then remove all cards. If the computer still does not start, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. The microprocessor has failed See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. a BIOS test. Memory modules are detected, but a memory failure has occurred. l If you have one memory module installed, reinstall it and restart the computer. l If you have two or more memory modules installed, remove the modules, reinstall one module, and then restart the computer. If the computer starts normally, reinstall an additional module. Continue until you have identified a faulty connector or reinstalled all modules without error. l If available, install properly working memory of the same type into your computer. l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. PCI bus failure has occurred. 1. Determine if a conflict exists by removing a card and then restarting the computer. 2. If the problem persists, reinstall the card that you removed, remove a different card, and then restart the computer. 3. Repeat this process for each card. If the computer starts normally, troubleshoot the last card removed from the computer for resource conflicts (see "Resolving Software and Hardware Incompatibilities"). l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. The video controller failed to initialize or respond. See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. No memory modules are detected. System board failure has occurred. l Reseat all memory modules, and then restart the computer. l To eliminate the possibility of a faulty memory connector, remove all memory modules, reinstall one memory module (if the computer supports a single module), and then restart the computer. If the computer starts normally, move the memory module to a different connector and restart the computer. Continue until you have identified a faulty connector or reinstalled all modules without error. l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. See "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance. Memory modules are detected, but a memory configuration or compatibility error exists. l Be sure that there are no special memory module/memory connector placement requirements. l Verify that the memory modules that you are installing are compatible with the computer. l If the problem persists, see "Contacting Dell" in your Owner's Manual for instructions on obtaining technical assistance.