I want to synchronize my files before I logged in, is it possible?

Yes, it's possible. You can do this by running Beyond Sync as a Windows service. Then, your files will be synchronized even if you didn't login yet. To install the service, please open the "Beyond Sync Schedule Service Manager" by clicking "Start Menu->Beyond Sync".

If you are familiar with Windows service, you can also install it manually:

1. Open DOS prompt window and make sure it has administration rights.
2. Go to Beyond Sync installation directory and run command line "BeyondSyncService.exe /install"
3. Open Windows Service Manager, locate "Beyond Sync Schedule Service", right click the mouse and open the "Properties" window.
4. Activate "Log On" tab, select correct account and type account information.
5. Click "OK" to close the window and start the service.