Internal camera not detected - hp probook 4540s

[Aarckange]

Hello,

I actually have an issue with the camera of my HP probook 4540s

I bought this computer about a year ago, and I had a trouble with the screen, so I sent it back to HP. But first I took back the datas I really needed from the Harddrive. When I sent it, the harddrive was still out of the computer, because they told me not to put it back in.

When I recieved it, they didn't put the harddrive back in the computer, so I had no windows, no HP programms nothing on it. I had to reinstall windows, which is what I did, but since then, the camera (and the microphone) are not working anymore.

I installed every driver that was given on the hp website for my probook, but it still doesn't work. I installed AMD cataclyst control center too, and the intel drivers, and the universal camera driver, still not working (neither does the microphone).

Can you help me to fix this problem ?

I already apologize if I did some grammar or pelling mistake, english is not my native language.

Thank you already

[Karthik]

This should help:

http://support.hp.com/us-en/document/c03430151

Also check for hardware functionality:

http://support.hp.com/us-en/document/c03463381

[Aarckange]

Hello, thank you for your quick answer.

Unfortunately, my webcam is not listed in the device manager list. And since I had to format everything and reinstall windows and the HP softwaress, I don't have any backup.

May HP have unplugged the camera when the computer was sent back to warranty ? Because they changed the screen, and the camera is integrated in the screen.