Enlarge / Core M Broadwell (left) vs. Core M Skylake (right). (credit: Andrew Cunningham) The good news: Shortly after its initial release, Microsoft suspended shipping its Spectre and Meltdown Windows patches to owners of AMD systems after some users found that it left their systems unbootable. Microsoft partially lifted the restriction last week, sending the update to newer AMD systems but still leaving the oldest machines unpatched. Now the company has an update that works on those systems too.