Service Manual

Hard Drive — The computer attempts to boot from the primary hard drive. If
no operating system is on the drive, the computer generates an error message.
USB Storage Device — Insert the memory device into a USB connector and
restart the computer. When F12 Boot Options appear in the lower-right
corner of the screen, press F12. The BIOS detects the device and adds the USB
flash option to the boot menu.
NOTE: To boot to a USB device, the device must be bootable. To ensure
that your device is bootable, check the device documentation.
Network — The computer attempts to boot from the network. If no operating
system is found on the network, the computer generates an error message.
Changing boot sequence for future boots
1 Enter system setup.
See "Entering System Setup".
2 Use the arrow keys to highlight the Boot menu option and press Enter to
access the menu.
NOTE: Note your current boot sequence in case you want to restore
it.
3 Navigate to Set Boot Priority to configure the boot priority.
4 Use the arrow keys to highlight the boot priority and press Enter to display
the different devices.
5 Select the device and press Enter to set the boot priority.
Clearing Forgotten Passwords
WARNING: Before working inside your computer, read the
safety information that shipped with your computer and
follow the steps in
Before working inside your computer.
After working inside your computer, follow the instructions
in After working inside your computer. For more safety best
practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance.
Prerequisites
1 Remove the base cover.
2 Remove the top cover.
3 Remove the processor fan.
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