Fix Windows 7 BSOD after installing KB4056894

As you may be aware, Microsoft has released a number of patches for all supported operating systems to protect them from Meltdown and Spectre attacks. These include Windows 7, Windows 8.1 and Windows 10. Unfortunately for AMD CPU users, these patches cause a blue screen of death (BSOD) for those who have an AMD Athlon chip. The OS gives a 0x000000C4 bug check error.