Or a system corruption that happened a while ago. Your current problems may all be a symptom of a broken installer package. Install Mac OS X El Capitan on VirtualBox. First, what you are going to do is download the VirtualBox for Windows from its website. Once you have downloaded the. SmartPCFixer is a fully featured and easytouse system optimization suite. With it, you can clean windows registry, remove cache files, fix errors, defrag disk. Fix List for DB2 Version 9. Linux, UNIX and Windows. WHQL October 9th, 2017 Game Ready. Provides the optimal gaming experience for Middleearth Shadow of War, The Evil Within 2, and Forza Motorsport 7. Third, go into Device Manager and uninstall both of the offending devices. They probably have little yellow exclamation points next to them. Fourth, reboot and re install the previous video driver. The audio driver may be fixed automatically, but have a downloaded copy handy. If things go well from there, you can either be happy that things work or re download the driver and try again. Bear in mind that this could always be a coincidence. Would someone with more experience please weigh in on thisKevin, you could also start a new thread with just your last two posts a fresh thread with clearer information could attract people with the experience that you need.