Android is constantly rebooting, how to reflash?

Question

Android

In general, the tablet lay in the bag, the buttons were pressed (by the bag) and the following result was obtained:
The tablet is rebooted every 2-3 seconds, displays only the model name. It is impossible to drive it into the flashing mode ... no keyboard shortcuts.
It looks like this: youtu.be/kFQisTeD1RY
Question: Is there software that can do this via usb? Without resorting to parsing the tablet and flashing via JTAG

Answer 1

I figured it out, the contact for connecting the keyboard cable was oxidized - it's tantamount to constantly pressing the keys - so he went crazy.
PS,
Water got in.

Answer 2

It depends on which tablet, on which processor .. it's usually possible, but I can't believe that it's the buttons that are pressed.
There, most likely, the battery is dead, or the power circuit is covered, (it is better to take it to the SC).
Do you have a separate charger or does it charge via usb? If there is, then try to turn it on with the charger plugged in.