S.B.
Have you tried descaling it? That's supposed to get done every 3-6 months.
http://www.keurig.com/customer-service/brewer-registratio...
And if you are using the k-cup, we had problems with ours. We had to go online to find out what was wrong. There was a piece that needed to be bent and you have to fill it with EXACTLY the right amount or it goes nuts. We recently bought an upgraded k-cup that works much better. GL!