Fire up regedit. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\WPA\. Create a new Key called PosReady. Right click the new key and add a new DWORD named installed with the value 1. That’s it. Now head along to the Windows Update website and you should see a bunch of updates.
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SYSTEM\WPA\PosReady]
“Installed”=dword:00000001