I use Citrix XenServer 5.5 and on a Windows Server 2008 R2 Guest there is installed Xentools 5.5, for a year all works well. After a restart we get a BSOD with Stop Code 7B, it is a problem with the Citrix pv-driver I think, but how can I delete this driver without GUI, safe mode also bring up a BSOD.
So I install a second Windows Server on same VM and can access the filesystem of the Guest. In the Windows/System32/driver I delete xenvbd.sys and scsifilt.sys in the registry I delete everything I found with xenvbd or scsifilt, but the BSOD is still here.
The Windows Startuprepair and sfc /scannow dosent help.
Update: All known Snapshots are with the same Issue