Can't play amnesia on my laptop?

I'm trying to play amnesia on my laptop but every time I open it it says this:

Fatal error: render #0 could not be installed. Make sure your graphics card drivers are up to date. Check log file for more information.

I went to intel's website and updated the graphics but it still won't work. I don't have money to spend so can this be fixed without paying? if not, what do i have to do?

also, here is information about the system (copied from control panel):

Windows Edition

Windows 7 Home Premium

Copyright 2009 Microsoft Corporation. All rights reserved.

Service Pack 1

Get more features with a new edition of Windows 7

System

Manufacturer: Hewlett-Packard

Model: HP 2000 Notebook PC

Rating: 3.2 Windows Experience Index

Processor: Celeron(R) Dual-Core CPU T3500 @ 2.10GHz 2.09GHz

Installed memory (RAM): 3.00 GB

System type: 64-bit Operating System

Pen and Touch: No Pen or Touch Input is available for this Display

If I can't get it to work on this computer, can i download it for free (like a demo) and put my product key in it (I bought a download from gamestop and the gamestop app doesn't work on my desktop computer). Thanks!