HP TouchSmart dx9000 Reference Manual page 21

3. Slide the memory module all the way into the memory slot, until the gold edge is almost completely
hidden in the slot, and then push down the outer edge of the memory module until the retaining
clips snap into place.
CAUTION: The memory module must be inserted all the way into the slot before it is snapped
down into place; otherwise it will not work properly. In the following illustration, a memory module
is installed incorrectly (A), with the gold edge showing.
4. Close the HP TouchSmart PC. See
NOTE: If a blank screen is displayed after you replace or add a memory module, the memory is
installed incorrectly, or it is the wrong type of memory. Remove and reinstall the memory module.
Closing the HP TouchSmart PC on page 31.
Adding Memory 15