Suddenly can't boot; all I get is an AP Fastboot Flash Mode screen

Device turned froze and turned off spontaneously. Get a bootloader screen that says that the device didn’t start up successfully. Use the Software Repair Assistant on computer to repair your device. Also says that it failed to validate boot image. Scrolling through different screens. Downloaded a Motorola utility, but it doesn’t recognize the device. Says it reports being model 000000000000000 (and more zeroes). Shopping for a new one, anyway within a year it’ll be obsolete, but wondering what happened. It has had a few falls and since a couple of days ago feels like something is loose inside.