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How to replace the System board on a OptiPlex AIO 35 7420

Published  November 05, 2025

This 3D experience gives you the step by step process of replacing the System board and a OptiPlex AIO 35 7420. The procedure will also include removing the Stand, Back Cover, System Board Shield, I/O Cover, Memory Module, SSD, Wireless Module (WLAN), Heat Sink, Processor, Bottom Cover, I/O Bracket and reinstalling them.

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