Amnesia won't start

[TheUnderdog2020]

So, I have just bought Amnesia from steam and installed it but when I go to run it, it doesn't work. When I click the .exe file it says that i'm logging onto steam (just like any other game) and then nothing happens at all. I've uninstalled and re-installed a few times and still nothing. Even changed and renamed files etc... and still nothing...

I have read the troubleshooting threads and I believe it's probably something to do with the drivers. (I'm not great with computers so I don't really know much about what is wrong or if the drivers are up to date or whatever. I just got this laptop at christmas and it's relatively new and plays lots of other high demanding games :S)
My laptop is a Toshiba Satellite c660. I've tried to find out the drivers by doing the method that was in the troubleshooting guide. (By going to documents and then the Amnesia folder) but when I click on the "Main" folder inside the Amnesia folder it is completely blank with nothing inside.

I would greatly appreciate if someone could help me out with this problem.
Thanks.