Moto G Unable to Factory Reset "boot failed" I have a Moto G which spontaneously went to a white screen with a blue "M".  It will only display that screen or a battery level screen.  If an attempt is made to recover or factory reset, it either shows the blue M, or the fastboot program says the boot failed.

What are the tools which are used to recover from this type of a condition, perhaps to load a boot image which will work?
This is one of two conditions... either the ROM has been corrupted, or most likely (since recovery won't start) is that the internal emmc chip (internal storage) is defective.

You need to attempt to reflash your device with it's specific factory firmware image. Since you didn't state which model specifically, it is hard to tell you where to go for the answer. (If you update the original question with your specific model and comment on this answer, I can update it to specific links for your device). 

To be honest, there is only a 50/50 chance of recovery at this point. The symptoms you describe are most likely a defective internal storage chip.