Dell Vostro 2421 Owner's Manual
Page 3
... 42 Deleting or Changing an Existing System and/or Setup Password 42 4 Troubleshooting...45 Enhanced Pre-Boot System Assessment (ePSA) Diagnostics 45 Diagnostics...45 Beep Codes...46 LED Error Codes...47 5 Specifications...49 6 Contacting Dell...55
... 42 Deleting or Changing an Existing System and/or Setup Password 42 4 Troubleshooting...45 Enhanced Pre-Boot System Assessment (ePSA) Diagnostics 45 Diagnostics...45 Beep Codes...46 LED Error Codes...47 5 Specifications...49 6 Contacting Dell...55
Dell Vostro 2421 Owner's Manual
Page 41
...For All-In-One Desktops, the service tag label is available on the front of the boot option. b) Click Submit and proceed to support.dell.com/support/downloads. 3. Select your preferred download method in the Please select your computer. 9. Follow the instructions on your computer. This section...you must enter to log on to install the updated BIOS settings on the screen. Exit - a) Enter the Service Tag or Express Service Code and click Submit. Identify the latest BIOS file and click Download File. 7. Click Run to your computer. Restart the computer. 2. System and...
...For All-In-One Desktops, the service tag label is available on the front of the boot option. b) Click Submit and proceed to support.dell.com/support/downloads. 3. Select your preferred download method in the Please select your computer. 9. Follow the instructions on your computer. This section...you must enter to log on to install the updated BIOS settings on the screen. Exit - a) Enter the Service Tag or Express Service Code and click Submit. Identify the latest BIOS file and click Download File. 7. Click Run to your computer. Restart the computer. 2. System and...
Dell Vostro 2421 Owner's Manual
Page 45
Power-on the computer and blinks when the computer is in a power management mode. Note the error code and contact Dell. Device Status Lights Turns on when you of problems encountered during testing CAUTION: Use the system diagnostics to run a diagnostic test on all devices ... particular devices or device groups allowing you to: • Run tests automatically or in the computer. As the computer boots, press the key as the Dell logo appears. 3. Select the device from the left pane and click Run Tests. 6. Turns on when the computer reads or writes data. If there...
Power-on the computer and blinks when the computer is in a power management mode. Note the error code and contact Dell. Device Status Lights Turns on when you of problems encountered during testing CAUTION: Use the system diagnostics to run a diagnostic test on all devices ... particular devices or device groups allowing you to: • Run tests automatically or in the computer. As the computer boots, press the key as the Dell logo appears. 3. Select the device from the left pane and click Run Tests. 6. Turns on when the computer reads or writes data. If there...
Dell Vostro 2421 Owner's Manual
Page 46
...RAM Read/Write failure Memory failure 5 Real-time clock power fail CMOS battery failure 46 Turns on An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop. Battery Status Lights Alternately blinking amber light and blue light Alternately blinking amber light with steady...amber light Light off Solid white light on when the Scroll Lock function is enabled. Temporary battery failure with AC adapter present. Code 1 Cause and Troubleshooting Steps BIOS ROM checksum in charge mode with AC adapter present. Keyboard Status Lights Turns on when the ...
...RAM Read/Write failure Memory failure 5 Real-time clock power fail CMOS battery failure 46 Turns on An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop. Battery Status Lights Alternately blinking amber light and blue light Alternately blinking amber light with steady...amber light Light off Solid white light on when the Scroll Lock function is enabled. Temporary battery failure with AC adapter present. Code 1 Cause and Troubleshooting Steps BIOS ROM checksum in charge mode with AC adapter present. Keyboard Status Lights Turns on when the ...
Dell Vostro 2421 Owner's Manual
Page 47
...the Power Button LED. The Power Button LED blinks the corresponding LED codes for the corresponding fault condition. This pattern continues until the system is powered off. Example: For No Memory detected (LED code 2) , The Power Button LED blinks two times followed by a ..., blinks two times, pause, etc. cache test failure Processor failure 8 Display Display failure 47 Code 6 7 8 Cause and Troubleshooting Steps Video BIOS test failure Video card failure CPU - Code 1 Cause and Troubleshooting Steps System board: BIOS ROM failure System board failure, covers BIOS corruption ...
...the Power Button LED. The Power Button LED blinks the corresponding LED codes for the corresponding fault condition. This pattern continues until the system is powered off. Example: For No Memory detected (LED code 2) , The Power Button LED blinks two times followed by a ..., blinks two times, pause, etc. cache test failure Processor failure 8 Display Display failure 47 Code 6 7 8 Cause and Troubleshooting Steps Video BIOS test failure Video card failure CPU - Code 1 Cause and Troubleshooting Steps System board: BIOS ROM failure System board failure, covers BIOS corruption ...