How Can I recover my sound after installing XP with service packs 2 and 3?

It's the age old story. My sound card worked fine until I installed Windows XP service packs 2 and 3. All of my drivers are updated. All of my drivers are Microsoft signed. The device manager doesn't show any hardware that needs to be fixed (there are no glowing exclamation marks next to anything). I have "some" sound, but it is garbled and barely understandable. Can anyone help? I have researched this on Google for countless hours without any success. Here's what I have on my PC.

Operating System new – server roles System Model

Windows XP Professional Service Pack 3 (build 2600)

Install Language: English (United States)

System Locale: English (United States)

Installed: 8/28/2011 12:06:33 AM VIA Technologies, Inc. KT400-8235

Enclosure Type: Desktop

Processor a Main Circuit Board b

2.00 gigahertz AMD Athlon XP

128 kilobyte primary memory cache

256 kilobyte secondary memory cache

Not hyper-threaded Board: KT400-8235

Bus Clock: 133 megahertz

BIOS: Phoenix Technologies, LTD 6.00 PG 10/16/2002

new USB Storage Use in past 30 Days (mouse over last used for details) new Hosted Virtual Machines (mouse over name for details)

Last Used

FUJIFILM USB-DRIVEUNIT, s/n 592D3836335E0510216DA32002424E, rev 1.00 8/28/2011 5:48:05 PM*

* Possibly used again before the reboot following this time.

None discovered

Drives new – drive encryption Memory Modules c,d

410.10 Gigabytes Usable Hard Drive Capacity

101.68 Gigabytes Hard Drive Free Space

ASUS DRW-1612BL [Optical drive]

WDC WD1600AAJB-56WRA0 [Hard drive] (160.04 GB) -- drive 0, s/n WD-WCAS2E256127, rev 58.01H58, SMART Status: Healthy

WDC WD2500BB-55GUC0 [Hard drive] (250.06 GB) -- drive 1, s/n WD-WMAL73545585, rev 08.02D08, SMART Status: Healthy 2048 Megabytes Usable Installed Memory

Slot 'A0' is Empty

Slot 'A1' has 1024 MB

Slot 'A2' has 1024 MB

Local Drive Volumes new – volume encryption

c: (NTFS on drive 0) * 160.04 GB 7.46 GB free

d: (NTFS on drive 1) 250.06 GB 94.23 GB free

* Operating System is installed on c:

Network Drives

None discovered

Users (mouse over user name for details) Printers

local user accounts last logon

Hank 8/31/2011 2:44:23 PM (admin)

local system accounts

Administrator never (admin)

Guest never

HelpAssistant never

SUPPORT_388945a0 never

DISABLED Marks a disabled account; LOCKED OUT Marks a locked account

Microsoft XPS Document Writer on XPSPort:

Controllers Display

Standard floppy disk controller

Primary IDE Channel [Controller]

Secondary IDE Channel [Controller]

VIA Bus Master IDE Controller NVIDIA GeForce2 MX/MX 400 [Display adapter]

Samsung SMB2330H [Monitor] (23.1"vis, s/n Z1MXHCLZ700822, July 2010)

Bus Adapters Multimedia

Standard Enhanced PCI to USB Host Controller (2x)

VIA Rev 5 or later USB Universal Host Controller (5x) C-Media AC97 Audio Device

Creative Game Port

Creative SB Audigy

Dazzle DVC100 Audio Device

Dazzle DVC100 Video Device

MPU-401 Compatible MIDI Device

Standard Game Port

Virus Protection [Back to Top] Group Policies

avast! antivirus 4.8.1368 [VPS 110831-1] Version 4.8.1368

Virus Definitions Version Up To Date

Realtime File Scanning On

None discovered

Communications new – connection speed & status Other Devices

1394 Net Adapter

↑ Realtek RTL8139 Family PCI Fast Ethernet NIC

primary Auto IP Address: 192.168.0.2 / 24

Gateway: 192.168.0.1

Dhcp Server: 192.168.0.1

Physical Address: 00:14:D1:13:B6:17

Networking Dns Servers: 65.32.5.111

65.32.5.112

OHCI Compliant IEEE 1394 Host Controller

Standard 101/102-Key or Microsoft Natural PS/2 Keyboard

Logitech USB Wheel Mouse

USB Composite Device

USB Root Hub (7x)

See your entire network map...

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Network Map (mouse over IP address for physical address) [Back to Top]

IP Device Type Device Details Device Roles

192.168.0.1 Router Motorola DHCP Server, Gateway

192.168.0.2 Windows XP Workstation Home-c8clemb3ij (in WORKGROUP)