Penumbra Overture Issues

[Lornex]

Hi I've had some problems with Penumbra Overture. After I installed the game and patch version 1.0.2 I ran the program. A got game entertainment menu popped up and I clicked on 'play'. Then my computer's screen turned black and the desktop reappeared. An error message popped up which said 'Failed! Check your openal installation.' My computer has altec lansing speakers but they do not work after the motherboard was changed on the computer. I have installed openal but when I installed it just created a folder in the the programs folder called 'openal.' Does this all mean that Penumbra Overture needs sound to work? If so, is there any way I could delete some sort of file to make it work? Please tell me if I am too unspecific.

My computer's specs are:

OS: Windows XP Media Center Edition

Processor: Intel Pentium D

Graphics Card: ATI Radeon X1300 (Catalyst AI disabled)

Memory Capacity: 1 GB