Early in the game, after unlocking the door with the computer and picking up the flashlight, I move down to the sewers with no problem. And then an area comes where I need to turn a valve in order to raise the water level. Soon, a voice says, "Life, Philip, here." I touch the water, a loading screen appears, and then the game crashes and I can't alt tab, or anything. I have to restart my computer every time.

I purchased the game through Steam, so it should have been updated automatically, I would think.

Here's my DxDiag:

Operating System: Windows 7 Home Premium 64-bit (6.1, Build 7601) Service Pack 1 (7601.win7sp1_gdr.110622-1506)
Language: English (Regional Setting: English)
System Manufacturer: Hewlett-Packard
System Model: HP Pavilion g4 Notebook PC
BIOS: InsydeH2O Version CCB.03.61.14F.24
Processor: AMD A4-3300M APU with Radeon(tm) HD Graphics (2 CPUs), ~1.9GHz
Memory: 4096MB RAM
Available OS Memory: 3562MB RAM
Page File: 3222MB used, 3901MB available
Windows Dir: C:\Windows
DirectX Version: DirectX 11
DX Setup Parameters: Not found
User DPI Setting: Using System DPI
System DPI Setting: 96 DPI (100 percent)
DWM DPI Scaling: Disabled
DxDiag Version: 6.01.7601.17514 32bit Unicode