I hate to say this, but Keurigs are garbage. We went through 4 in one year, always sent by the company. We did the descaling, the pin silliness their customer service will tell you about. Bottom line, the machine is just not well made, particularly for its high price point. It actually amazes me that they are still in business.
Because when they work, they are great, and when they don't, they get replaced. Our first one quit after about 9 months, they just sent us a new one, and it's been great for the past 3 years or so. It this one goes, I'd get another in a heartbeat.