Company Files: Lost Data

My computer was giving me issues shortly after a Windows Update and became inaccessible.  I had it serviced and there was apparently some type of issue with the hardware.  A Data Recovery was performed; however not all files were transferable as some were corrupt.  One of the files not recoverable were my QB Company Files.  Windows had to be reinstalled and the computer was basically restored to its original settings.

The most recent backup file that I was able to locate was in January 2020.  This results in over eight (8) months of lost data.  My biggest concern is the months of lost payroll data.  What would be the best avenue to recreate the information?  I do have hardcopies of all of the employees' pay stubs.

I was wondering too.  The January 2020 file does not have all transactions reconciled for the Company's 2019 Fiscal Year.  I did provide the Accountant with an Accountant's Copy from January 01, 2019 through December 31, 2019.  There were accountant changes.  Would it even be possible to integrate the accountant changes since the January 2020 file did not have 2019 fully reconciled?  The Accountant's Copy was pulled from the system in August.