In Order to understand your issue, I would require more information. Is there any message on your screen? If so what is it displaying. Once I have that information I would be able to provide further assistance. If you ever need other questions answered, here's a personal link: http://www.insidr.com/in/answerman-2
I know the directv system up and down. I can give you an answer to anything. I've been a technician for directv for over 4 years. Certified in every field.
reset your receiver - unplug for 15 seconds and then let it reboot - you might also need authorizations resent - you can do this online at directv.com, log into your account and go to the equipment tab, then click on resent authorization - if you don't have access to www.directv.com, you can call 1-800-531-5000 and ask any rep to resend authorization.