BIOS is the short form of the Basic Input/Output System. It is a set of code that resides on the chip on the computer’s motherboard. When a system starts, it looks in a chip for BIOS to get instructions on where to locate the OS and among a lot of other things, it further helps in communication between the hardware and the OS. Like software and drivers, updates for BIOS are also launched occasionally, but you ought to have an extremely good cause for updating it, also called flashing the basic input/output system. Unless you’re having a particular problem such as compatibility while installing any hardware that’s solvable through dell bios update, only then you ought to update it.

Why Should The User Update BIOS ?

Dell suggests updating BIOS as part of the programmed update cycle. Like driver revisions and OS, the update holds changes or feature enhancements that’ll assist in keeping the computer program current and compatible with the other system modules (firmware, hardware, software, and drivers) as well as offering increased stability and security updates. Unlike Anti-Virus program and Windows updates which are frequently automatic, you have to update BIOS manually. Dell provides a simple to utilize self-installing update package that permits such a task to be done relatively simply.

Caution: Always backup all the data before trying updating BIOS as an issue can cause a potential data loss.

How Can You Accomplish Dell BIOS Update ?

Try any of these methods:

Method#1: Through Windows OS

For updating the BIOS on the Dell laptop/computer, you’ll first need to check which BIOS version is currently running on the system.

  • Hit and hold Win + R key to open Run window > enter msinfo32 > hit Enter. A new window will open. Make certain System Summary is chosen from the left pane. In the right pane, find BIOS Date/Version. The value against it will be the version of BIOS. Note it down.

  • Navigate to > type the Express Service Code or Service Tag in the specified textbox frequently written on the bottom or top of the laptop or desktop, if not, hit Win + R key > enter cmd > hit Enter. In the black window, enter ‘wmic bios get serialnumber’ command > hit Enter for running the command and note the characters you see under Serial Number, it is the Service Code.

Service Code

  • Enter it under Express Service Code or Service Tag’s textbox on the webpage > submit. After submitting the code, the system model ought to appear on that page.

Detect Dell Pc

  • Make certain downloads and Drivers is chosen from the left > scroll down, under the Optimize the computer with updates and drivers option > click locate it myself. Make sue right Win OS is listed next to View all accessible updates. If not, then click on Change operating system to choose the right Microsoft Win OS that is presently installed on the system.
  • Under Refine the results click BIOS from the drop-down menu for placing a check > click BIOS accessible for download from the search results for expanding the details. If the version of BIOS and date is latest than the one presently installed > click on Download File. If not, then you already have the newest version of BIOS. Save > close any running apps, and open that file you have downloaded.


  • Click on Yes when prompted. Follow the on-screen instruction cautiously. Click yes > OK for the warning messages and confirmation that might vary by your system model. Don’t switch off the laptop or computer in any case throughout the updating procedure. In case of the laptop, make certain the battery is full in the laptop, and your AC (Alternating Current) adapter is connected with the laptop all along.

Method#2: Updating BIOS Utilizing A USB Drive

If the computer can’t load or boot into the OS, but there’s still a requirement for updating the basic input/output system, download the BIOS file utilizing some other system and save that file to a USB drive. For installing the BIOS update using a USB drive:

  • First, make a bootable USB drive.
  • Download the basic input/output system update file and save it to that USB.
  • Switch off the Dell computer.
  • Connect your USB > start the Dell computer again.
  • Hit F12 button at the logo screen of Dell for entering One-Time Booting Menu.
  • Utilizing your keyboard arrow keys, choose USB Device > hit Enter.
  • Now, in the command prompt, enter the complete BIOS filename, for example, O9010A12.exe > hit Enter.
  • Follow the on-screen instructions in the BIOS Update Utility for finishing the update procedure.

Warning: Don’t switch off the computer throughout the BIOS update procedure. Dell laptops have to have the battery installed and fully charged or at least ten percent before you start the process. Dell suggests running the laptops on AC (Alternating Current) power before going on with the update procedure.

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