Kyle's Asus ROG Laptop isn't charging after a recent Windows 1803 update, and there hasn't been a patch for two years. What can he do? If Asus doesn't offer a fix, he should try the Windows 10 battery diagnostic by pressing the Windows key and typing "battery." Microsoft may troubleshoot and download a patch to fix it. If that doesn't do it, then it just may be that his battery is depleted and just won't take a charge. It would have to be replaced.
This article from answers.microsoft.com will show him how to roll back, so he can try doing that.