Win 7 64bit and Biab 2010. All working fine until 2 days ago. After multiple windows updates I lost all sound in Biab. Opt/midi/Dxi etc showed 'none' synth selected. opened box and selected TTS-1; OK-ed out but still nothing, when I went back into DXi, none was showing as selected. Reset to factory settings... just the same. Full uninstall and reinstall... nothing. Restored to 2 days previous... nothing again. Uninstalled Sonar and reinstalled (for TTS-1)... no difference. When I open the Opt/Midi/DXi all the synths are shown and now when I try to load any of them I get a message that Biab cannot connect to it. All is not completely lost as I have a dual boot system on separate dics with XP on the other and everything there is working fine.
Any help would be appreciated.

LFU2