Has anyone had trouble with their Keurig coffee machine? Any ideas on how I can fix mine?

My husband has really enjoyed having a Keurig, but after three years it has stopped working. The water heats up, but then it doesn’t brew. I hope I explained that correctly. We have the kind that holds extra water and can turn itself on in the morning.

Any suggesstion on how to fix it are welcome.

Also, any stories of other people having problems are appreciated too. Please include how many years you owned it when it started to malfunction.