Uninstall the botched Microsoft patch and install the fixed one. Also, AMD is not affected by Meltdown, only Intel is, so you do not need that patch.
Thanks, black zion. I don't know how to uninstall a patch. Since the
freezing occurred after the first one, and was not fixed by the second
one, I presume I uninstall the first one. I don't know which patch was
for AMD or which was for Intel. How do I uninstall a patch?