HP ZBook 15 Mobile Workstation - Manual (Page 61)

c. Gently press the memory module (3) down, applying pressure to both the left and right
edges of the memory module, until the retention clips snap into place.
8. Replace the service cover. (See Removing or replacing the service cover on page 37 .)
9. Replace the battery. (See Inserting or removing the battery on page 31 .)
10. Turn the computer right-side up, and then reconnect AC power and external devices to the
computer.
11. Turn on the computer.
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