Problem by saving a file

Microsoft® Project 2016 MSO (Version 2207 Build 16.0.15427.20166) 32 Bit

After changing hardware the MS Project files won't save correctly. While working I save the file constantly. I tried to close the file and after the question "want to save?" I said yes but it didn't close. After close it without saving changes in the activities were saved but baseline and status date not. What happend?