Problem: Vodafone web stick also reports errors, USB network instals with code39
It was a virus,
which infected ndis.sys file, situated in
Antivirus deleted this file, causing all network devices to report code 39.
Deleting lower filters in registry, as suggested for this code39 error, didn't help.
This web page helped:
after copying ndis.sys from a PC which works fine and after restart, a blue screen of death appeared.
I get rid of it via ERD commander and inserting registry information which was missing too:
"DisplayName"="NDIS System Driver"
Actually, I opened a regedit on PC which worked ok and wrote this in troubled registry which was missing this information.
After restart, all devices were fine.
So I wouldn't suggest restart after "ndis.sys" copy without checking this registry information about ndis.sys first - they should be written or imported into registry if missing.