Laptop Cooling

[CaffeineTripp]

I understand that there may not be that many options for cooling down a laptop, given it's small, compact size. I'm unsure if there are any better fans out there for laptops, of course depending on the brand and model. What I was thinking of, and if anyone has done it and have some input, is modifying the casing itself where the fan and cooling fins are.
I can't imagine that the USB style plug in fans do anything, and if they do, I can't imagine that they do too much to help the heat that's generated from the cooling fins.
So, upgrading to a better CFM fan and modifying the case, if it's possible to help with cooling down the motherboard and the chips, would be the best bet.
The reason that I'm bringing this up is not so much along the lines of a gaming laptop, but the old laptop I have may have trouble with cooling. A Toshiba Satellite P205D-S7438. They tend to have problems with randomly crashing. I've tried adjusting the registry, boot, among other things, but nothing seems to help. The laptop can be on for quite some time, but then crashes out of nowhere. Never crashes within the first hour of being on, nor after waiting for it to cool, only when hot.

 

[MMM]

Laptops are designed with the existing case for maximum air flow, cutting the case or adding hole/slots might upset the air flow for cooling....
Finding another fan that is more powerful than existing might be a bit tricky in getting the correct size to substitute the existing one.

Your best course of action if you have the skills would be to open the case up and clean the cpu heat sink as this can be the main culprit of laptops overheating, as laptops heat sinks block up quite easy.