If Microsoft Onenote becomes unresponsive, you may need to run a repair. Here is the proper method.
Start | in the Search programs and files command, type: Onenote /safeboot
Click the Delete Notebook Cache button
Close Onenote and reopen and you should be all set.
Clearing cache would remove the onenote files that were open in the notebook. Open the notebooks in onenote to resolve it. You can do this by using the File and Open option (User/Documents/Onenote folder). If you find the notebooks missing there then you can copy the backup notebooks to the documents folder and then again try opening them in onenote. The default backup loaction is (C:\Users\\AppData\Local\Microsoft\OneNote). Also you can copy the onenote folder/MyDocuments from the work computer and transfer it to the documents location where you have the issue.