0xc000021a Windows Error

I installed Windows 8.1 from Windows 7 a few weeks ago, and have since had to reinstall THREE times because of this same error.

Basically, after a few days of normal use, I start getting "Shockwave Flash Player has stopped working" in google chrome, firefox, windows apps, etc.

So, I go ahead and try to restart windows. Shuts down just fine. But, it wont start. I now get the automatic repair, which doesn't work. Error code i'm given from the BSOD: 0xc000021a. Safe Mode does not work.

Some programs i've had installed: Chrome, Photoshop, Firefox, Trello (Windows App), Java, SublimeText 2, FileZilla, Skype, and a few others that don't come to mind.

Any help would be greatly appreciated. In the mean time, I'm using Ubuntu.

There is more information on this topic located here, on the Microsoft support site. After reading that, you may decide what you think is best. If you are installing from a disc, you may have a defect in the disc, which could cause a problem with the installation.