hero 7 does not respond to commands

[oceanswims]

I appear to have lost control of my Hero 7. It won't always turn on or off, it doesn't record, and I have lost the view on the back screen. Control settings are there, but attempts to change them meet with long delays. Sometimes, it won't turn on at all. It was working just fine until just now.

[fishycomics]

 try recharging your battery  and also try a  factory rest.  

[oceanswims]

Thank you, I have done a reset. Also, the battery will not charge.

[danielr15]

Perform a manual update.
Go to the Update page and choose your HERO7 camera.
Under "Other ways to update" at the base of the page, click "Update your camera manually."
Enter your Serial Number and other requested information, click Next Step.
Click "Download Update."
Click "Click here to download firmware."
Follow the steps on the screen for detailed instructions for your operating system

Also, be sure your SD card is on this list https://gopro.com/help/articles/block/microSD-Card-Considerations