Dell XPS 8500 (Early 2012) - Manual (Page 15)

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After Working Inside Your Computer
After you complete replacement procedures, ensure the following:
• Replace all screws and ensure no stray screws remain inside your computer
• Connect any external devices, cables, cards, and any other part you
removed before working on your computer
• Connect your computer and all attached devices to their electrical outlets
CAUTION: Before turning on your computer, replace all screws and ensure that
no stray screws remain in the computer. Failure to do so may damage your
computer.
• Turn on your computer.
After Working Inside Your Computer 15