The water overflows instead of passing through the machine and dispensing coffee:
If the water or coffee overflows around the K-cup holder instead of dispensing, then your needles may not be penetrating the K-cup or the K-cup holder may be clogged. You can view our guide [here] on how to replace the top needle.
The water never makes its path to the K-cup:
If the water poured into the reservoir does not drain, it will not reach the K-cup. The drain on the Keurig may be clogged.