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Table 8. Diagnostics
Number of Power LED flashes
1
2
3
4
5
6
7
3,6
3,7
Flashing BIOS (USB key)
1
Follow the procedure from step 1 to step 7 in
2
Create a bootable USB drive. For more information see the knowledge base article
3
Copy the BIOS setup program file to the bootable USB drive.
4
Connect the bootable USB drive to the computer that needs the BIOS update.
5
Restart the computer and press F12 when the Dell logo is displayed on the screen.
6
Boot to the USB drive from the One Time Boot Menu.
7
Type the BIOS setup program filename and press Enter.
8
The BIOS Update Utility appears. Follow the instructions on the screen to complete the BIOS update.
Flashing the BIOS
You may need to flash (update) the BIOS when an update is available or when you replace the system board.
Follow these steps to flash the BIOS:
1
Turn on your computer.
2
Go to www.dell.com/support.
3
Click Product support, enter the Service Tag of your computer, and then click Submit.
NOTE: If you do not have the Service Tag, use the auto-detect feature or manually browse for your computer
model.
4
Click Drivers & downloads → Find it myself.
5
Select the operating system installed on your computer.
6
Scroll down the page and expand BIOS.
7
Click Download to download the latest version of the BIOS for your computer.
8
After the download is complete, navigate to the folder where you saved the BIOS update file.
9
Double-click the BIOS update file icon and follow the instructions on the screen.
Backup media and recovery options
Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see
Windows Backup Media and Recovery
Problem description
System board: BIOS and ROM failure
No memory or RAM detected
System board or chipset error
Memory or RAM failure
CMOS battery failure
Video card or chip failure
CPU failure
BIOS recovery image not found
BIOS recovery image found but invalid
"Flashing the
BIOS" to download the latest BIOS setup program file.
Options.
SLN143196
at www.dell.com/support.
Dell
111
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