Need help with Penumbra dowload

[Earthykiller127]

OK, so I recently bought the game and it's my first ever computer game. But when I play it, all I see is a white screen once the game starts to play. Now, I don't know much of anything about computers, so I'm completely lost in how to fix this, what download I need, where to go and what to re-install. So any help would be nice.
So far the only things I can tell you about my laptop is, it's only a year old, Acer, Windows 7, Intel i5, and it cost me $600 on sale.

OUCH, 600$?
are you sure you haven't been pranked?
okay, if its penumbra overture, i saw its to vista max, but you can probably use compabtibility or run as administrator.
but the important thing is that you need to tell me which penumbra you got.
e.g: overture, tech demo, black plague, or requiem?