Bitlocker Drive Encryption Filter Driver (fvevol) Service Defaults in Windows 7

Bitlocker Drive Encryption Filter Driver.

Default Settings

Startup type:Boot
Display name:Bitlocker Drive Encryption Filter Driver
Service name:fvevol
Service type:kernel
Error control:critical
Group:PnP Filter
Path:%SystemRoot%\System32\DRIVERS\fvevol.sys
Registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\fvevol

Default Behavior

Bitlocker Drive Encryption Filter Driver is a kernel device driver. In Windows 7 it is being loaded by Boot Loader before Kernel initialization. If Bitlocker Drive Encryption Filter Driver fails to load, Windows 7 attempts to write the error data into Event Log and restart the computer, using the Last Known Good configuration. If the Last Known Good configuration is not valid, Windows 7 startup ends with a Stop error. If you remove or disable the fvevol service, Windows 7 won't start.

Restore Default Startup Configuration for Bitlocker Drive Encryption Filter Driver

1. Run the Command Prompt as an administrator.

2. Copy the commands below, paste them into the command window and press ENTER:

sc config fvevol start= boot
sc start fvevol

3. Close the command window and restart the computer.

The fvevol service is using the fvevol.sys file that is located in the %WinDir%\System32\DRIVERS folder. If the file is changed, damaged or deleted, you can restore its original version from Windows 7 installation media.