Hi,
Thanks for posting in our forum!
>Is there System restore function were we can restore to the specific date before we did the re installation?
If you performed the system state backup or backup your drive C with Windows Server Backup or other backup tools, you can perform the restore to recover your files.
For steps, please see here:
If you are using a third-party backup tool, please contact the vendor.
Hope this can help.
Best Regards,