Diagnosis
No signs of life usually points to a failed power supply unit (PSU) inside the printer, a blown internal fuse, or a disconnected internal cable from a jolt.
How to Fix It
First, try a different power cable if you have one. Then, check the rear of the printer where the power cord connects—make sure it's fully seated in the printer's socket, not just the wall. If still dead, the next user-serviceable step is to check the voltage selector switch (a small red slide switch) near the power port. Make absolutely sure it's set to the correct voltage for your country (e.g., 120V for North America).
If That Didn't Work
If the voltage is correct and a different cable does nothing, the internal fuse on the PSU or the PSU itself is likely dead. This requires opening the chassis to check, which is a repair best left to a technician unless you're very comfortable with electronics.
Heads Up
Before you declare it dead, try plugging it directly into a known-good wall outlet, not a power strip or surge protector. Sometimes the printer's power draw on startup can trip a sensitive strip that other devices don't.