How to uninstall time code reader drivers

Alpermann & Velte:

- De-install the PCL-PCI card from the device manager

- Delete all copys of avpcl32.dll, windrvr.sys and windrvr.vxd from the \windows\ or \winnt\ directory and all of its subdirectories.

- Delete those INF file(s) from \windows\inf or \winnt\inf or one of its sub-directories, that has references to PCL-PCI.  To find the relevant INF file(s), search for the string 'Alpermann+Velte' or 'PCL-PCI'.  Delete the

PNF file that belongs to that INF file, too.

Depending on the PCL-PCI driver and the Windows version you're using , the following steps may be necessary:

- With Regedit delete the class 'Alpermann+Velte' from the registry.  Delete the key {A7F02CEC-F32C-4cf8-875D-1CF3F8ED35BA}, too, if it exists.  To find the relevant entries, search the registry for the string 'Alpermann+Velte'.

- In the registry delete all references to 'WinDriver' or 'windrvr'.

The last two steps are needed to correct a error in the INF file with older driver versions.  Future driver updates will be done by the device manager without the need to start Regedit.

Adrienne:

Win 95/98/ME:

If a device needs to be permanently removed from the registry, run the 'REGEDIT.EXE' program in the '\windows' directory.

Delete this key and its subkeys:

     HKEY_LOCAL_MACHINE -> SYSTEM -> CurrentControlSet ->

       Services -> Class -> WinRT

Then delete the WRTdev*.vxd file in the directory C:\windows\system\vmm32\

Change the path if needed for other versions of Windows 95.

NT/2000/XP:

If a device needs to be permanently removed from the registry,  run the 'REGEDT32.EXE' program in the '\system32' subdirectory.

Then delete the WinRT.sys file from the directory C:\WINNT35\system32\drivers\

Change the path if needed for other versions of Windows NT.