150 Changing the Default Boot SequenceChanging the Default Boot Sequence1. Enter System Setup (see Entering System Setup (BIOS)).2. Use the arrow keys to highlight the Boot Device Configuration menuoption and press to access the menu.NOTE: Note the current boot sequence in case you want torestore it.3. Press the up-arrow/down-arrow keys to move through the list ofdevices.4. Press plus (+) or minus (-) to change the boot priority of the device.5. Save changes and exit system setup.Flashing the BIOSThe BIOS may require flashing when an update is available or whenreplacing the system board. To flash the BIOS:1. Turn on the computer.2. Go to support.dell.com/support/downloads.3. Locate the BIOS update file for your computer.NOTE: Locate the Service Tag of your computer. For moreinformation, see the Quick Start Guide that shipped with yourcomputer.If you have your computer’s Service Tag or Express Service Code:a. Enter your computer’s Service Tag or Express Service Code in theService Tag or Express Service Code field.b. Click Submit and proceed to step 4.If you do not have your computer’s Service Tag or Express ServiceCode:a. Select one of the following options:- Automatically detect my Service Tag for me- Choose from My Products and Services List- Choose from a list of all Dell productsb. Click Continue and follow the instructions on the screen4. A list of results appears on the screen. Click BIOS5. Click Download Now to download the latest BIOS file.