Hi,
It should be possible.
Are you sure you have the hole for the webcam?' (there will be a small hole for the microphonr)
The models which did not come with webcam have Bezel part number
For use only on computer models not equipped with a webcam part number 848241-001
page 39 service manual
So, you might need to replace the Beze if the hole is not present.
Bezel with webcam part number
and you will need the webcam module
Webcam/microphone module (includes double-sided adhesive) part number 848264-001
On page 39 and 41 you can see the steps to install the module.
http://h10032.www1.hp.com/ctg/Manual/c04956181
Hope it helps,
David
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