A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data.
If you were using the default resolution all should have been OK unless your PC hardware/system does not support win10, and the PC makers site should have had that info, as well as the win10 update failing.
You need to run the system file checker sfc https://support.microsoft.com/en-us/kb/929833
Then a windows update to check there are no failed updates, and finally an MS Office repair