Troubleshooting LEGO Mindstorms EV3

When EV3 brick encounter glitches, what to do?

1. EV3 brick dead after battery change: check battery springs
2. EV3 flashes red briefly then dies: defective battery. Get LEGO Education to replace
3. EV3 brick says "starting", then nothing:
a. remove battery and reinsert
b. hold down center and right buttons till display says "updating"
c. plug brick into computer via USB
d. go to Tools drop down menu and select "Firmware update"
4. EV3 brick stuck during firmware update: ....

Go to What to do when EV3 stops working.