A blue screen should never happen. But it does...

Usually this is a driver problem, so my first suggestion is to check if you don't have updated drivers, especially for the graphics card.

However, it can also be a problem in the browser or flash plug-in, so once again I recommend you check if you have the latest version of the browser and flash.

Also, try with a different browser, like chrome or firefox to see if it fixes the problem.

Last, it can also be a hardware problem, check with some games, if the same happens and you already updated everything, it could be a problem in the laptop itself.