I have a Dell desktop running Windows XP. Suddenly I find all printers are gone and no longer installed. I received the message "print spooler not running" Installation cannot start the print spooler service. Start the service now using Windows NT service manager and then press OK." I have no idea what happened or where to start to fix it. Also, I tried to restore to a week earlier to see if this would restore the printers but the restore failed . Thanks.