How to find model number of compaq presario cq42 notebook.

DaleB

Honorable
May 4, 2013
1
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10,510
 

Jonathan Yang

Honorable
Apr 29, 2013
32
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10,540
If it's not on the back open the battery compartment and you will find it. If it's not there, check around your laptop screen for the model number. The part number might of somehow got took off.