DELL OPTICAL DRIVE DIAGNOSTIC INSTALL

The diagnostic lights are not lit after the computer successfully boots to the operating system.Д®nsure that the display is connected and powered on.ДЄ possible processor failure has occurred. The computer is in a normal on condition. Remove the coin cell battery for one minute, reinstall the battery, and restart. If the problem persists, the system board is faulty.ДЄ possible coin cell battery failure has occurred.If the computer boots, add the peripheral cards back one by one until you find the bad one. Disconnect all internal and external peripherals, and re-start the computer.Possible peripheral card or system board failure has occurred. Re-seat the 2Г—2 power connector from the power supply unit.

Remove all peripheral cards from the PCI and PCI-E slots and re-start the computer. The computer hardware is operating normally but the BIOS may be corrupt or missing. If the computer still fails to boot, inspect the CPU socket for damage.

DELL OPTICAL DRIVE DIAGNOSTIC INSTALL

If available, install verified working memory of the same type into your computer.ДЄ possible CPU or system board failure has occurred.

If only one memory module is installed, try moving it to a different DIMM connector and re-start the computer. If the computer starts normally, continue to install additional memory modules (one at a time) until you have identified a faulty module or reinstalled all modules without error.

If two or more memory modules are installed, remove the modules, then re-install one module and re-start the computer.

Memory modules are detected, but a memory power failure has occurred.

If the LED still does not illuminate, the problem is with the power supply.

If it illuminates, there could be a problem with the system board.

If the LED still does not illuminate, remove the PSU connections from the system board, then press and hold the power supply button.

If it illuminates, there could be a problem with a peripheral.

If the LED next to the switch does not illuminate, disconnect all internal and external peripherals, and press and hold the power supply test button.

If the LED next to the switch illuminates, the problem may be with your system board. Press and hold the power supply test button at the rear of the power supply unit.

Power off computer, leaving the computer plugged in.

Plug the computer into a working electrical outlet and press the power button.ДЄ possible system board, power supply, or peripheral failure has occurred.

Ensure that the main power cable and front panel cable are securely connected to the system board.ДЄ possible system board failure has occurred.

Ensure that the electrical outlet is working by testing it with another device, such as a lamp.

Ensure that any power strips being used are plugged into an electrical outlet and are turned on.

Bypass power strips, power extension cables, and other power protection devices to verify that the computer turns on properly.

Re-seat the power cable in the power connector at the back of the computer and the electrical outlet.

The computer is either turned off or is not receiving power. NOTE: The diagnostic lights will blink when the power button is amber or off, and will not blink when it is blue. The system now includes pre-POST and POST LEDs in an attempt to help pinpointing a possible problem with the system easier and more accurate. Once the operating system starts to load, they turn off and are no longer visible. These diagnostic LEDs are only active and visible during the POST process.

The diagnostic LEDs are located on the front of the chassis next to the power button. These LEDs do not indicate the problem that caused the POST routine to stop. NOTE: The diagnostic LEDs only serve as an indicator of the progress through the POST process.

Dell optical drive diagnostic