You can save AutoCount Accounting Data folder at drive C before format your PC. Once you had formatted your PC and reinstall AutoCount Accounting, you can go to File, select Manage Account Book and click on Attach Database File. Click on Get Available Server to select your PC server which is in this format, your computer name/A2006. Then, browse at Physical Data File column and select file from AutoCount Accounting folder. Click OK once you had selected the file.