Laptop Crashes Often - Overheating?

Alright, so I've got a bit of a problem with my Toshiba Laptop. It's about 4 years old and has rarely given me problems, until recently. The model number is Toshiba Satellite A200-TJ5

On Monday, I decided to play a video game in the morning and to my surprise the laptop crashed within 2 minutes. I didn't think much of it, so I restarted the laptop only to find that the onscreen image appears "broken" or distorted. The laptop doesn't even load but instead goes straight to a BSOD while windows is trying to load. Since the image is distorted I can't really tell you what it says. The laptop shuts down on this screen and if I reboot it I get the same distorted image and BSOD issue. I have to leave the laptop off for about 15 minutes, then it started up just fine.

So I decided to stream a video but within ten minutes, the laptop crashed again. I then got the distorted image and BSOD problem, so I waited another 15 minutes. After some testing I realized that now I can't play any video games, or watch any videos because the laptop keeps crashing when I do these things.

I figured, maybe the fan is dusty. So I get my compressed air spray and send it into the vents, but there was no dust since I had cleaned it earlier this month and I also use a cooling pad.

So I downloaded a program to monitor the temperatures of the hardware. The CPU and hard drive seemed fine, but I noticed right away that my video card has jumped to 70 Celsius, and my computer only just started and doesn't feel hot at all. So I tested this and I noticed when I played any video game the video card temp jumps up quickly and reaches 100 Celsius after about 1 minute, and then my computer crashed. I streamed a video and I noticed a slower increase, but after 10 minutes the video card temp jumps to 100 Celsius and it crashes. During this the CPU temp was around 66 Celsius, but I think that's normal.

Also, I have windows fully updated and all drivers as well.

Here's a screenshot of the temp when my computer is on idle after just being started:

http://img840.imageshack.us/img840/9681/idletempk.jpg

Can someone give me an opinion? I don't really want to do what mgorman87 said since it seems that program collects a lot of information from my computer. If someone could tell me what they think might be happening, that would be appreciated. Thanks.