Will only see the exact screen you see when you send us the id and password from Teamviewer. Normally is the Desktop, and if you have something on your desktop – that you do not want us to see, can move the content to a folder while we do the unlock.
With Teamviewer we are not able to access any file or folder from your PC without you seeing it, you see everything we are doing. We are not interested in your private files and will never try to open any private file from your PC.
You always have the control of your PC and of the connection and if you see something you do not like can always stop the connection by closing TeamViewer.