Pavilion dv7 6100 HP TrueVision HD webcam not detected in software but present in dev. manager

I have a problem with my dv7 6100er notebook on Win7. Camera TrueVision HD is not detected in YouCam or skype or device&printers, but in device manager it determined and show that work fine. TrueVision HD camera drivers contains two files: usbvideo.sys and ksthunk.sys. What I tried: delete TrueVisionHD webcam from dev. manager and reinstall it, install default Microsoft usb camera diver, uninstall and install YouCam (Virtual camera driver of YouCam also unistall and install). No result. And also lamp in the camera does not light up never.
What I can also to do? Thanks.

I read all posts in this topic, but all the problems in that topic is no camera in the device manager.
I see truevisionHD camera in my dev. mamager. Just in case I checked webcam connector. No result.
And just in case  my HP TrueVisionHD vid_064E & pid_e258.

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    Please click “Accept as Solution ” if you feel my post solved your issue, it will help others find the solution.
    Click the “Kudos, Thumbs Up" on the right to say “Thanks” for helping!

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