Easy, but annoying fix. When your computer starts go to the services applet
found in administrative tools. Select properties for the RPC or Remote
Procedure Call service. Change the Recovery from "Restart Computer" to
"Restart Service." Now your PC will stay up long enough to fix.
Once the worm has been eliminated I recommend running Windows Update to get
all the current critical updates.
Lastly, change the RPC service back to "Restart Computer" as the recovery
method.