My watch will not charge. When I try to power off, I receive a small bolt with the time. When I release the buttons it turns black

Hi Montagne1932

welcome to the Apple (user-to-user) Community.

Re: "My watch will not charge or turn off"

Apple support have articles online that may help guide you:

How to: Restart your Apple Watch (how to: turn off, turn on)

Restart your Apple Watch - Apple Support

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Re: "When I try to power off, I receive a small bolt with the time".

If your watch requires charging, a red lightning bolt  appears on the screen

How to: Check your battery and charge your Apple Watch - Apple Support

and

What to do: If your Apple Watch won't charge or it won't turn on - Apple Support

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Re: "When I release the buttons it turns black":

If your Apple Watch screen is blank, or is on intermittently:

This discussion thread may help:

watch screen is blank - Apple Community

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More info:

Apple Watch Battery and Performance - Apple Support

Apple Watch User Guide - Apple Support

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If needed:

How to: Get service for your Apple Watch battery - Apple Support

or

You might want to reach out to Apple Watch Support.

There is a "Get Support" link (scroll to the very bottom) on their webpage (link below)

Apple Watch - Official Apple Support

All the best :-)