Me again...
Here are the things I tried :
- Find all UpperFilters in the registry CurrentControlSet (especially one concerning the integrated webcam) and try to remove them : found a lot, but IMPOSSIBLE 'cause locked by the system
- Uninstall the device (via Device Manager) : worked but not all registry entries were deleted
- Reboot with repair console, mount the registry hive manually and then delete the whole key (HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_05CA&PID_18A1&MI_00) : deletion worked, but after reboot and automatic device driver install by Win7, the webcam still doesn't work.
Should I remove ALL UpperFilters entries ? because there is a lot and with different values : pcmcia (several), serenum, SynTP, amdxata, kbdclass, mouclass, BrFiltUp...
I don't want to mess up Win7
Perhaps we missed something else and the problem is not the webcam but the usb controller or even the video filters (DirectShow, I heard their architecture changed in Win7)
By the way, I'm still stuck with no more ideas. I can NOT afford a Win7 reinstallation by now, and especially on every single laptop of our company!
As a new piece of information, here is the registry key where the webcam device driver is registered :
QUOTE
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_05CA&PID_18A1&MI_00]
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Enum\USB\VID_05CA&PID_18A1&MI_00\6&1ae78980&6&0000]
"DeviceDesc"="@usbvideo.inf,%usbvideo.devicedesc%;USB Video Device"
"LocationInformation"="0000.001a.0007.006.000.000.000.000.000"
"Capabilities"=dword:000000a4
"HardwareID"=hex(7):55,00,53,00,42,00,5c,00,56,00,49,00,44,00,5f,00,30,00,35,\
00,43,00,41,00,26,00,50,00,49,00,44,00,5f,00,31,00,38,00,41,00,31,00,26,00,\
52,00,45,00,56,00,5f,00,38,00,37,00,33,00,31,00,26,00,4d,00,49,00,5f,00,30,\
00,30,00,00,00,55,00,53,00,42,00,5c,00,56,00,49,00,44,00,5f,00,30,00,35,00,\
43,00,41,00,26,00,50,00,49,00,44,00,5f,00,31,00,38,00,41,00,31,00,26,00,4d,\
00,49,00,5f,00,30,00,30,00,00,00,00,00
"CompatibleIDs"=hex(7):55,00,53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,\
5f,00,30,00,65,00,26,00,53,00,75,00,62,00,43,00,6c,00,61,00,73,00,73,00,5f,\
00,30,00,33,00,26,00,50,00,72,00,6f,00,74,00,5f,00,30,00,30,00,00,00,55,00,\
53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,65,00,26,00,53,\
00,75,00,62,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,33,00,00,00,55,00,\
53,00,42,00,5c,00,43,00,6c,00,61,00,73,00,73,00,5f,00,30,00,65,00,00,00,00,\
00
"ContainerID"="{00000000-0000-0000-ffff-ffffffffffff}"
"ConfigFlags"=dword:00000000
"ClassGUID"="{6bdd1fc6-810f-11d0-bec7-08002be2092f}"
"Driver"="{6bdd1fc6-810f-11d0-bec7-08002be2092f}\