Could you post your Computer's DxDiag?
To gather a DxDiag on your computer, please follow the steps here: http://answers.ea.com/t5/The-Sims-3/HOW-TO-DxDiag-for-Sims-3-PC-Only/td-p/1049584/
Please either use pastebin.com and put the link here or use spoiler tags.
(edit: could you also please use a more readable font. It's a bit hard to read for me)
Part 3:
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Sound Devices
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Description: Speakers / Headphones (IDT High Definition Audio CODEC)
Default Sound Playback: Yes
Default Voice Playback: No
Hardware ID: HDAUDIO\FUNC_01&VEN_111D&DEV_76D1&SUBSYS_102804B0&REV_1002
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: stwrt64.sys
Driver Version: 6.10.6324.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/24/2011 17:57:18, 520192 bytes
Other Files:
Driver Provider: IDT
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
Description: Communications Headphones (IDT High Definition Audio CODEC)
Default Sound Playback: No
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_111D&DEV_76D1&SUBSYS_102804B0&REV_1002
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: stwrt64.sys
Driver Version: 6.10.6324.0000 (English)
Driver Attributes: Final Retail
WHQL Logo'd: Yes
Date and Size: 1/24/2011 17:57:18, 520192 bytes
Other Files:
Driver Provider: IDT
HW Accel Level: Basic
Cap Flags: 0xF1F
Min/Max Sample Rate: 100, 200000
Static/Strm HW Mix Bufs: 1, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: No, No
I3DL2(tm) Listen/Src: No, No
Sensaura(tm) ZoomFX(tm): No
---------------------
Sound Capture Devices
---------------------
Description: Microphone Array (IDT High Definition Audio CODEC)
Default Sound Capture: Yes
Default Voice Capture: No
Driver Name: stwrt64.sys
Driver Version: 6.10.6324.0000 (English)
Driver Attributes: Final Retail
Date and Size: 1/24/2011 17:57:18, 520192 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
Description: Rec. Playback (IDT High Definition Audio CODEC)
Default Sound Capture: No
Default Voice Capture: No
Driver Name: stwrt64.sys
Driver Version: 6.10.6324.0000 (English)
Driver Attributes: Final Retail
Date and Size: 1/24/2011 17:57:18, 520192 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
Description: Microphone / Line In (IDT High Definition Audio CODEC)
Default Sound Capture: No
Default Voice Capture: Yes
Driver Name: stwrt64.sys
Driver Version: 6.10.6324.0000 (English)
Driver Attributes: Final Retail
Date and Size: 1/24/2011 17:57:18, 520192 bytes
Cap Flags: 0x1
Format Flags: 0xFFFFF
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