An unhappy client

I woke up this morning and my dish was playing fine.I just got back from work and it's just not playing.I tried the scanning process and now it's stuck on scanning in progress.I took out the plug and waited a few minutes,took out the card and put it in again.switched it on and still the same message.I know when the weather is windy it usually acts up,but today there is hardly any wind and it's doing this.can someone plz help me fix the problem?