First time using machine. On for an hour and now doesn't work. Says "System error-control panel. Xrays are disabled. Turn the system off wait 5 seconds and then restart the system. If this message persist call for service." I can turn off for 10 minutes and restart, it will work for 5 minutes, then error message again. Fans run, nothing appears hot, i opened back and ran large fan into case, and did not help.