Details of the problem have been gradually emerging through reports posted by users on Microsoft Answers. People with AMD Athlon-powered computers say that following the installation of the patch, it is impossible to boot into Windows leaving a full reinstallation as the only option -- although some users report that even this does not fix the problem.
The article only says that only users with older AMD kit are having this problem, but it doesn't say what versions of Windows are involved. When Microsoft initially released Win 10, video cards with Win 8.1 supported drivers worked fine. Not anymore. Coincidental to the widespread exposure of the cpu flaws, Microsoft now requires video cards to be fully supported in Win 10. I have a number of clients who experienced this problem and who had their problem solved by switching out their existing video card for a known good one.
In fairness the the article's author(s), the average Windows user is going to equate a black screen with a complete failure to boot. And they won't understand that, since updates in Win 10 can not be turned off, re-installation is a fool's errand because Win 10 will continue to fail to locate an appropriate driver.
in short blame Microsoft for slipping this in under the radar, and blame AMD for not updating their legacy drivers after the fact.
Acer Aspire 5742: Intel i3 M370, Intel HD graphics, 4 GB ram, 500 GB hdd, Broadcom wireless n adapter