*@nxs0152 in the comments mentioned that a hard reset worked for him. Here are the instructions to perform a hard reset.
1. Turn off your Chromebook.
2. Press and hold Refresh and tap Power.
3. When your Chromebook starts up, release Refresh .
https://support.google.com/chromebook/answer/3227606?hl=en

*@bbqsauce2865 in the comments mentioned that he cleaned the USB connector and that helped him. Try that first. Grab a wooden toothpick and carefully clean out any lint from the USB connector on the computer and the charger. Then blow out the dust with a compressed air can or your mouth.

In this video I troubleshoot my Chromebook that stopped charging. It’s easy to do. Try this out if your Chromebook no longer charges.

There is a faster and easier way to check the battery health through the diagnostics menu. I made a video on how to access the diagnostics menu: https://youtu.be/D2zkndEjpFo

If you have an old charger that is not USB C, you can use a multimeter to check that it is providing the proper voltage. Search for /”voltage check laptop charger/”.

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RELATED VIDEOS:
How to Access Chromebook Diagnostics Menu
https://youtu.be/D2zkndEjpFo

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