1. Replace all screws and ensure that no stray screws remain inside your computer.
2. Connect any external devices, peripherals, or cables you removed before working on your computer.
3. Replace any media cards, discs, or any other parts that you removed before working on your computer.
4. Connect your computer and all attached devices to their electrical outlets.
5. Turn on your computer.
Exiting Service Mode
Service Mode allows users to immediately cut off electricity from the computer and conduct repairs without disconnecting the
battery cable from the system board.
To exit Service Mode:
1. Connect the AC adapter to the power-adapter port on your computer.
2. Press the power button to turn on the computer. Your computer will automatically return to normal functioning mode.
BitLocker
CAUTION: If BitLocker is not suspended before updating the BIOS, the next time you reboot the system it will
not recognize the BitLocker key. You will then be prompted to enter the recovery key to progress, and the
system will ask for this on each reboot. If the recovery key is not known, this can result in data loss or an
unnecessary operating system reinstall. For more information about updating the BIOS with Bitlocker enabled,
search in the Knowledge Base at www.dell.com/support.
CAUTION: If BitLocker is not suspended, replacing parts like the system board or storage drives on a system
with BitLocker or device-encryption enabled will also trigger the encryption and lock the user out. A recovery
key is required to regain access to Windows. The recovery key is automatically saved to the user's Microsoft
Account (MSA) when the device is encrypted and can be retrieved from https://account.microsoft.com/
devices/recoverykey
For more information, refer to Windows Support article: Finding your BitLocker recovery key in Windows
8
Working inside your computer
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