title: Google drive cannot start up and no log file found
body: <p>Haven't used google drive for a long time. Now just want to sync files between win 7 and google driver. Google driver won't start up after reinstall or start with admin. Local user has admin right. There is no sync_log.log in the driver folder C:\Users*username*\AppData\Local\Google\Drive even with debug flag "--vv". There is no crash report neither. 
  Checked folder ownership and permission, all looks good. 
  event log has no warning/error.
  Out of options and need help.</p>