WebCam not working... Codecs requirements?

I have 2 Logitech HD C615 webcams hooked to 2 PC's:
- One hooked to an unedited OS and acts as a Security/Surveillance Camera - both hardware and software work 100% - plenty of video recordings to keep my house safe
- One hooked to a PC with OS that was edited with NTLite and that is the problematic one

I can't get video or audio after edited the OS with NTLite. After NTLite editing, the device is detected without problems in Device Manager. There are no question marks. Hardware-wise it appears to be working, but there is no video or audio... I think the codecs may be the issue, but I do not know which ones...

Other imaging devices, like my scanner work fine without issues, but they are WIA devices. This webcam is not a WIA device. Logitech software does not allow the video to come up either, but detects the device without problems.

If this is indeed a codecs problem, is there a place where I can download original Windows 10 codecs?


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It could be a driver/device problem though. Logitech LWSDebugOut temp file reports (repeatedly):

SetupDevicesForMonitor: Failed to open a Device... Ignoring...
Line: 1508

SetupDevicesForMonitor: Failed to open a Device... Ignoring...
Line: 1502

NTLite Host OS shows all hardware devices are present...
All 8. I use one, test the system, make a backup, then use the next one, etc., but I sometimes it takes many months to discover something is not working. So far webcam has been the only thing I wish I could make work with my presets.


Active Member
That's a good strategy, but you can consolidate presets (mostly) by load/appending them. Post-installation commands get squirrelly, be careful there.

My guess would be broken UpperFilter/LowerFilter reg keys. Try reinstalling these two drivers:

Thanks! I do not think there is a way to actually re-install those 2 drivers without having them standalone. I really wish there was a database for each default Windows 10 driver out there... I did check our programs, like Droid Cam (that uses Android phone cameras via USB or Wi-Fi) and they work.


Active Member
I think NTLite's Host Refresh might fix this situation, but nuhi's the expert.

Here's my take on removing drivers: Most users go overboard and remove everything because it's cool -- including Windows shared drivers. It's OK to strip out vendor-specific HW, but leave the generic Microsoft drivers alone. Shared drivers don't take that much space, and one day you will end up like today scratching your head...


Active Member
Forgot the obvious... Mount the untouched W10 ISO, explore the mount directory and copy files/directories from Windows\System32\drivers and DriverStore matching ksthunk & tsusbhub. Drill down those folders and copy all the related files, not just the *.sys drivers.