Ohh...not the white screen   I fear it's the 'Shader 2' issue creeping up again  

* Copy and pasted from another post, for sorry if it's impersonal   *

Basicially, even if you can INSTALL DirectX9c, it dosent meen that your card is necessarilly COMPATABLE with it, inparticular the use of Pixel Shader 2. Older cards will show a white screen with text-in-tact if Shader 2 is not supported, which it sounds like your problem is.

Now, there are 2 options

1. If you've been meening to upgrade your video card, perhaps now is the time   I dont know your situation (college gamers tend to be strapped for cash) but you can get video cards (some supporting even Shader3) for around $25 (http://www.newegg.com/Product/Product.aspx?Item=N82E16814102406 , after shipping).

2. Contact [email protected] to start the refund process. The developers have all agreed that it's programtically unfeasable to rework the engine to support sub-S2 cards 

Sorry for the bad news, but I hope this helps.

Intel Celeron is a processor and there are many different types of Celeron processors.

The game requires a processor speed of at least 1 GHz and recommends 2 GHz. So as long as the particular Celeron is at or better than the minimum speed of 1 GHz AND you meet or exceed the rest of the minimum requirements then the game will run.


System Requirements

Minimum:
- Windows XP (32-bit) / Vista (32 & 64-bit)
- 1 GHz Processor
- 512 MB RAM
- 64 MB DirectX 9.0c 3D Video Card
- 1 GB Hard Drive Space
- DirectX 9.0c

Recommended:
- 2 GHz Processor
- 1 GB RAM
- 128 MB DirectX 9.0c 3D Video Card