Fixing A No-Boot Issue Caused By Usb-Boot Support; Flea Power Release; Wi-Fi Power Cycle - Dell XPS 13 Service Manual

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.
Fixing a no-boot issue caused by USB-boot
support
Sometimes the computer does not boot to the operating system when USB devices are connected to the computer during startup. This
behavior occurs because the computer is looking for bootable files in connected USB devices.
Either disconnect USB devices before booting or follow these steps to fix the no-boot issue.
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 Settings > System Configuration > USB Configuration.
The USB configuration is displayed on the right pane.
4. Clear the Enable Boot Support check box to disable it.
5. Save the settings and exit.

Flea power release

Flea power is the residual static electricity that remains on the computer even after it has been powered off and the battery has been
removed. The following procedure provides the instructions on how to conduct flea power release:
1. Turn off your computer.
2. Remove the base cover.
3. Press and hold the power button for 15 seconds to drain the flea power.
4. Replace the base cover.
5. Turn on your computer.

Wi-Fi power cycle

If your computer is unable to access the Internet due to Wi-Fi connectivity issues a Wi-Fi power cycle procedure may be performed. The
following procedure provides the instructions on how to conduct a Wi-Fi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.
1. Turn off your computer.
2. Turn off the modem.
3. Turn off the wireless router.
4. Wait for 30 seconds.
5. Turn on the wireless router.
6. Turn on the modem.
7. Turn on your computer.
58 Troubleshooting