This hides the activation screen but fails on many 10.3.4 units due to Apple patching.
Result:
Unlike Mac users who have access to Sliver or Checkra1n natively, Windows users need to jump through a few extra hoops. Here is your checklist: Iphone 5 Icloud Bypass 10.3.4 Windows
The 10.3.4 update specifically complicated the Windows bypass workflow.
Install drivers
Run Sliver
Execute bypass
Finish