I have moved your post to it's own thread, in Freesat, because you tagged it onto the end of another thread, regarding a Freesat problem, I assume your problem also relates to this.
You have not provided much information so I'll assume that your setup was working until recently.
Have you checked all the cable connections at the back of your television?
Have you checked the connections on your receiver?
Have you checked the cable connection to your LNB?
The easiest way to check if the receiver is working is by connecting it to a friends, or relatives, Sky dish, if this then works concentrate on your dish, LNB, and cable.
Check if the dish has moved due to the winds. If it hasn't check that the cable is still connected to the LNB and that no water has got into it.
Finally you might have to replace the LNB, as they don't last forever, how long have you had your system?
