My computer crashed for the second time?

My computer crashed for the second time ever and in the last few weeks. I got a blue screen both times, only this time my computer just restarted itself on its own without me touching anything. It took a second for that to happen.

The first time I got a blue screen, around two weeks ago, I had kept my desktop on so that the video I was making could finish rendering overnight. It crashed maybe thirty minutes (an hour at the most) after I started actively using it. The second time I got a blue screen, maybe a half hour/forty-five minutes ago, I was playing around in Photoshop. The only other programs I had open was Chrome, and Skype. Right now I have those open and the Control Panel as well as the Windows Explorer folder thing. Also, this time, I had only been able to use it for around the same time and I’d just started it up for the first time in… Well, the last time it was on was one AM this morning.

My computer is not new, but I didn’t start really using it until around September. It is custom-made, my brother built it for me. I think I first got it in the summer of 2013. I do try to take care of my computer and by that I mean cleaning **** out that I don’t need as often as possible, shutting it down every time I’m done with it—that’s all I do really…

Here are my specs I know to add:

Operating System: Windows 7 (64-bit)

Graphics: AMD Radeon HD 7800 Series

Processor: AMD FX(tm)-4100 Quad-Core Processor

RAM: 8GB (Kingston)

What is "Teredo Tunneling Pseudo-Interface"?