Run a Dxdiag and post the first third here. (How to post a Dxdiag)Are you running a custom sound pack?System Information------------------Time of this report: 1/1/2013, 20:06:27 Machine name: TVIN-PC Operating System: Windows Vista™ Home Premium (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.120824-0336) Language: English (Regional Setting: English)System Manufacturer: Dell Inc. System Model: XPS 625 BIOS: BIOS Date: 03/17/09 14:42:50 Ver: 08.00.15 Processor: AMD Phenom(tm) II X4 940 Processor (4 CPUs), ~2.9GHz Memory: 8180MB RAM Page File: 3297MB used, 13254MB available Windows Dir: C:\Windows DirectX Version: DirectX 11DX Setup Parameters: Not found DxDiag Version: 7.00.6002.18107 64bit Unicode------------DxDiag Notes------------ Display Tab 1: No problems found. Sound Tab 1: No problems found. Input Tab: No problems found.--------------------DirectX Debug Levels--------------------Direct3D: 0/4 (retail)DirectDraw: 0/4 (retail)DirectInput: 0/5 (retail)DirectMusic: 0/5 (retail)DirectPlay: 0/9 (retail)DirectSound: 0/5 (retail)DirectShow: 0/6 (retail)---------------Display Devices--------------- Card name: ATI Radeon HD 4800 Series Manufacturer: Advanced Micro Devices, Inc. Chip type: ATI display adapter (0x9442) DAC type: Internal DAC(400MHz) Device Key: Enum\PCI\VEN_1002&DEV_9442&SUBSYS_05021028&REV_00 Display Memory: 739 MB Dedicated Memory: 1001 MB Shared Memory: 3834 MB Current Mode: 1024 x 768 (32 bit) (60Hz) Monitor: Dell E228WFP Driver Name: aticfx64.dll,aticfx64.dll,aticfx64.dll,aticfx32,aticfx32,aticfx32,atiumd64.dll,atidxx64.dll,atidxx64.dll,atiumdag,atidxx32,atidxx32,atiumdva,atiumd6a.cap,atitmm64.dll Driver Version: 8.17.0010.1124 (English) DDI Version: 10.1 BGRA Supported: YesDriver Attributes: Final Retail Driver Date/Size: 4/5/2012 21:20:04, 1067520 bytes WHQL Logo'd: Yes WHQL Date Stamp: Device Identifier: {D7B71EE2-D702-11CF-FC77-0825BEC2C535} Vendor ID: 0x1002 Device ID: 0x9442 SubSys ID: 0x05021028 Revision ID: 0x0000 Revision ID: 0x0000 Video Accel: ModeMPEG2_A ModeMPEG2_C Deinterlace Caps: {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(UYVY,UYVY) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(YV12,0x32315659) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {3C5323C1-6FB7-44F5-9081-056BF2EE449D}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive {552C0DAD-CCBC-420B-83C8-74943CF9F1A6}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,2) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive {6E8329FF-B642-418B-BCF0-BCB6591E255F}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,1) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive {335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalSt retch {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC1,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC2,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC3,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(IMC4,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(S340,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= {5A54A0C9-C7EC-4BD9-8EDE-F3C75DC4393B}: Format(In/Out)=(S342,UNKNOWN) Frames(Prev/Fwd/Back)=(0,0,0) Caps= DDraw Status: Enabled D3D Status: Enabled AGP Status: Enabled-------------Sound Devices------------- Description: Speakers (Logitech USB Headset)What settings (texture size anti-alising and so on) are you using in the game?