Go to the address about:crashes and tell us your latest crash IDs. We can then look at the data specific to your crash and have a better idea of what is causing the problem.

Its probably because your windows product key isn't genuine? I was having the same error and i did that thing where you activate windows without a product key< but then i noticied on my comp(which my friend gave me) is the product key ._. lol so i entered that one and WOOP Dee Doop Poop :D it works fine now