Reference Guide

Updating or resetting the BIOS
Flashing the BIOS
It is recommended to flash the BIOS when an update is available or when you replace the system board. 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.
Clearing CMOS settings
In the event that flashing your computer with the latest BIOS update results in your computer being unable to boot, a BIOS
reset is necessary. Clearing the CMOS settings will reset the BIOS to factory settings. For more information about clearing the
CMOS settings, see your computer's Service Manual.
Platform Trust Technology (PTT)
PTT must be enabled in the BIOS setup program for it to be deployed on the computer. Follow these steps to enable and
configure the PTT:
1. Turn on or restart your computer.
2. Press F2 when the Dell logo is displayed on the screen to enter the BIOS setup program.
The BIOS setup program is displayed.
3. On the left pane, select Security.
4. Select or clear any of the following options to enable or disable it, respectively:
● PTT On: The PTT is enabled and activated.
● Clear: The BIOS clears the information stored in the PTT.
5. Save the settings and exit.
4
Updating or resetting the BIOS 7