How do I figure out what caused my computer to crash?

[kuurt]

Finally my computer crashed again. This time I had the settings set up for it to create a kernel dump file. Yet when I go to the start button and do a search for "%SystemRoot%\MEMORY.DMP", it says "no items match your search". So why is it not creating a kernel dump file?

 

[kuurt]

My computer crashed again, and this time it looks like there are two dump files/folders. It won't let me read them or put them into a zip file on the desktop, so how can I share them here?

 

[kuurt]

I had blue screen view create an html report of the dump file and then I put it in a zip folder. Can someone understand this report?

 

[kuurt]

Here's another dump file report. They both say ntoskrnl.exe driver is the cause of my crashes. I've done memory diagnostic and my memory was fine. I tried to update several drivers but they always tell me I have the latest update, except for my video card driver. It looks like there is a newer driver for that but it said it was a gaming update so I didn't know if I should update it since I don't play games. Anybody have any idea why this driver is causing my computer to crash?