In elevated command prompt
cd /d "C:\Users\All Users\Application Data\microsoft\Network"
go through the list of services and make sure all of the following are set to Automatic or Manual: Remote Procedure Call (RPC), System Event Notification, Windows Management Instrumentation Driver Extensions, COM+ Event System, DCOM Server Process Launcher
Try to start these services (of not started yet). All start fine?
Start REGEDIT and browse to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\BITS\Parameters
What do you see on the right side of screen?