Webcam in windows 8.1

On a fairly fresh install of windows 8.1 pro 64bit- I had two devices (card reader and a webcam)that showed with a yellow triangle stating that windows could not start the service due to registry issues (code 19).
Following some other suggestions, I removed the upperFilters entry under the corresponding class entry in the registry and got rid of the code 19 error. The card reader is working. The Logitech webcam 920 pro, now is recognized in windows and works under camera in windows, but has no video in any other software. Both the Logitech quickcam and Skype come up with a black screen. The webcam is recognized and audio does work, so the audio portion of the webcam is working. Just no video or still capture.
I have exhausted most ideas and am looking for suggestions.
DocChuckAsked:
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DocChuckConnect With a Mentor Author Commented:
Thanks all for some suggestions, most of which I had already tried. Sorry to say but I didn't get the answer here.
I finally did fix the issue but it turned out to be a long way around fix. This was a new install of windows, so other than some installed software, I didn't have a lot to lose by doing a refresh of win8.1. I then went back and the camera was still not working, but windows was asking me to download the software (drivers) from the app store. Once I created a Microsoft login, which I really didn't want to do, it downloaded the drivers, installed them and everything started working.
Even though I had manually downloaded and installed the Logitech drivers, Windows was not happy until I let it do the initial install itself. Once this was done, I could update the drivers just fine.
Thanks for all the suggestions, but I can't say anyone gave me an answer I could acknowledge.
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LazarusCommented:
Let me ask the obvious, have you uninstalled it then re-installed it with the newest Logitech Webcam software?
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DocChuckAuthor Commented:
Yes. And no joy
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LazarusCommented:
Odd, I have a Logitech C920 also on Win  8.1 with no issue. are you sure you have the correct driver for it? look here: http://www.logitech.com/en-us/support/hd-pro-webcam-c920?section=downloads&bit=32&osid=23&file=http%3A%2F%2Fwww.logitech.com%2Fpub%2Fvideo%2Flws%2Flws251.exe
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DocChuckAuthor Commented:
Yep, same driver / software. I have tried all the obvious things before asking here. This is a tough one.
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LazarusCommented:
I'll assume you have uninstalled the Logitech software and also Deleted the Drivers from the Device Manager? If so have you also look at updating the UVC drivers?
http://logitech-en-amr.custhelp.com/app/answers/detail/a_id/25904
Being it is a Plug and Play device it should work ok with just the Windows Drivers. You may have to look at settings in your Motherboard Bios as well.
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DocChuckAuthor Commented:
None of the suggestions were things that I had not already tried. I finally fixed it by refreshing Windows 8.1 install and letting windows do the initial driver install from the app store.
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