Windows Defender Software automatically updated on my Dell Venue 8 Pro, which is preloaded with Windows 8.1. When I wanted to shut down my tablet, I chose the option to install updates and for it to shut down afterwards. The next morning I switched my tablet on, the BSOD appeared with an error message reading as follows: "Your PC ran into a problem and needs to restart. We're just collecting some error into, and then we'll restart for you. ( % complete) If you'd like to know more, you can search online later for this error: 0xc000021a" When the collection of error info reaches 100%, the tablet simply restarts and this loop continues over and over again. I tried doing research concerning this problem, but had no luck getting any help for my Dell Venue 8 Pro. It would be highly appreciated if someone could offer a solution to my problem.