Its an M-Audio X64
driver problem try this and see if it works....
1) Create a .bat file (create txt file and change extention to .bat)
2) Right Click on file > "edit" and enter following info:
net stop "Audiosrv"
net stop "AudioEndpointBuilder"
3) Save file as "Audio stop"(or whatever you want) to your main drive ie: C:\Audio stop
4) Open "run" from start menu and enter "gpedit.msc" (without quotes) and hit "OK"
5) Now navigate from right pain of window "User Configuration" > "Windows Settings" > "scripts (Logon/Logoff)" > "Logoff"
6) From window that opens from clicking "Logoff" Click "Add" then browse to where you saved "Audio Stop.bat" earlier and double click on it.
7) Hit "Apply" and close.
You are done
Window7 will now Automatically stop the Audio services when Shutting Down or Restarting allowing system to complete the process.