I've had quite a few issues in the past with BSODs being triggered by outdated video drivers; however, once I updated those, they've stopped. But, I still get a periodic error when playing video on the internet (usually whilst also browsing in other windows) that I can't figure out. Basically, what happens is the computer simply shuts down with no error message (straight to black). Upon turning it on again, it usually gets part of the way into the startup process and then shuts down again (in the same fashion). After doing this about twice, windows offers to launch 'start up repair', which I do, and this solves the problem (generally by doing a system restore). However, I can't seem to figure out what's causing this (as I think all of the relevant drivers are up to date, MalwareBytes/AVG/Spybot all say no problems, and there aren't any logs of this in the BlueScreen View). I also am not exactly sure what triggers this, however, the computer (or Chrome) does seem to 'lag' before it happens so I can generally expect it though it doesn't always trigger when playing videos. Outside of playing videos though, no errors appear so I think it is related to the graphics card in some way.
I've attached the Srt log from the most recent StartUp Repair (and one from a past one; the most recent one says 'unspecified changes', the older one gives the error code c000021a), and two files that have system information. If you need me to attach anything else, just let me know.