For the power button to work, check and make sure you’ve done the following: Place a new Naväge SaltPod capsule in the Crushing Chamber with the foil side facing down. Click the lid shut until it's firm. Gently shake the device for a couple of seconds to mix the SaltPod contents with the water in the Upper Tank If you reopen the Lid, the Power Button will no longer work with that particular SaltPod, even if you re-close the Lid. The reason the power button won’t work without a SaltPod is an important safety feature to avoid the painful stinging caused by running plain, unsalted water through your nose. If after going through these instructions carefully, you're device still won't start, please give our awesome customer service team a call. They are daily Naväge users and can be reached at (800) 203-6400.