Overheating? Laptop Keeps Crashing

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

This might help http://www.newegg.com/Product/Product.aspx?Item=N82E16834991042

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.Ikarii_

I'm actually not very technically savvy, so I'm not sure what you mean by thermal paste. Also, I believe the card is integrated, so I won't be able to remove it from the motherboard to apply this thermal paste. I might be able to open the back of the laptop up, but the back pad spans the entire back of the laptop so I'm not sure how safe it is it do so.

Also, I'm using theLogitech Cooling Pad N100. I'm not sure how effective it is, but the air from its fan doesn't feel very strong at all.

I hate fixing laptops at work soo much. For them most of the time its hardware problems, but you can sell the screens for $100 or more.

How do you tell the CFM of a cooling pad? I don't normally buy things online, so I might just go to a local retail store and see what they have to offer. Any idea what I should be looking for?

Also, I found a website that shows how to dissamble my laptop but it seems I have to take apart just about everything to get to the motherboard, so I suppose that won't be happening. Here's a look for anyone interested:

http://www.irisvista.com/tech/laptops/toshiba-satellite-a205/laptop-disassembly-1.htm