Yeah, this one's common. It's an automatic shut-off, and it's usually because it thinks there's no cup.
The fix is simple: make sure there's always a cup on the drip tray plate when it's powered on. The brewer uses a cup sensor. If it doesn't detect a cup, it may shut off automatically.
If that didn't work, check the basics: is it plugged into its own outlet? If the electric circuit is overloaded with other appliances, the brewer might not function properly. Try a different outlet on its own circuit.
Heads up: Don't use a glass mug. The sensor can't see it, so the brewer might shut off thinking no cup is present. Use a standard ceramic or opaque cup.