Dell OptiPlex 390 Owners Manual - Page 74
Beep Codes, Clear CMOS. - error code 1 3 4
View all Dell OptiPlex 390 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 74 highlights
Power Button Problem Description A possible system board resource and/or hardware failure has occurred. Troubleshooting Steps • Clear CMOS. • Disconnect all internal and external peripherals, and restart the computer. If the computer boots, add the peripheral cards back one by one until you find the bad one. • If the problem persists, the system board / system board component is faulty. LED Power Button Problem Description Troubleshooting Steps Some other failure has occurred. • Ensure that the display/monitor is plugged into a discrete graphic card. • Ensure that all hard drives and optical drive cables are properly connected to the system board. • If there is an error message on the screen identifying a problem with a device ( hard drive), check the device to make sure it is functioning properly. • If the operating system is attempting to boot from a device (optical drive), check system setup to ensure the boot sequence is correct for the devices installed on your computer. Beep Codes The computer can emit a series of beeps during start-up if the display cannot show errors or problems. These series of beeps, called beep codes, identify various problems. The delay between each beep is 300 ms, the delay between 74