Hi, thanks in advance to anyone who tries to help.

I have been a few days trying to sort this to no avail.
New HDD, Clean install of winxp without speakers plugged in, added and updated AVG anti-virus, updated to sp2,

plug speakers in, no sound

. checked device manager and yellow exclam against C-Media AC97 audio device...properties...Windows cannot load the device driver for this hardware. The driver may be corrupted or missing. (Code 39)...
I have tried uninstalling, re-installing from windows update, motherboard cd that came with pc and asrock and c-medias websites for latest drivers...no joy
have tried deleting the device and re-installing, checking bios to ensure wudio is on either auto or enabled and it is...checked forums and googled it for hours and cant seem to find a solution...
dxdiag says there is an error under the audio tab...
can anyone help ?
Details from Windows and Belarc listed below...thanks a lot in advance
Windows Supplied Info
OS: Windows XP Professional
Provider: C-Media Inc.
Class: MEDIA
Version: 5.12.01.0049
Date: 05/20/2005
Manufacturer: C-Media
Device Desc: C-Media AC97 Audio Device
Hardware ID Derived Info
Device id: PCI\VEN_1106&DEV_3059&SUBSYS_97611849&REV_60
Bus: PCI
Vendor: VIA Technologies Inc
Device: VT8233/A AC'97 Enhanced Audio Controller
Operating System System Model
Windows XP Professional Service Pack 2 (build 2600) No details available
Processor a Main Circuit Board b
3.00 gigahertz Intel Pentium 4
16 kilobyte primary memory cache
2048 kilobyte secondary memory cache Board: 775VM800 1.00
Bus Clock: 200 megahertz
BIOS: American Megatrends Inc. P1.30 10/14/2005
Drives Memory Modules c,d
137.43 Gigabytes Usable Hard Drive Capacity
129.94 Gigabytes Hard Drive Free Space
TOSHIBA CD/DVDW SD-R5372 [CD-ROM drive]
3.5" format removeable media [Floppy drive]
SAMSUNG SV1604N [Hard drive] (160.04 GB) -- drive 0, s/n S03LJ10X803269, rev TR200-24, SMART Status: Healthy 960 Megabytes Installed Memory
Slot '0' has 1024 MB
Slot '1' is Empty
Local Drive Volumes
c: (NTFS on drive 0) 137.43 GB 129.94 GB free
Network Drives
None detected
Users (mouse over user name for details) Printers
local user accounts last logon
Miles 25/02/2006 06:37:12 (admin)
local system accounts
Administrator never (admin)
Guest never
HelpAssistant never
SUPPORT_388945a0 never
Marks a disabled account; Marks a locked account Microsoft Office Document Image Writer Driver on Microsoft Document Imaging Writer Port:
Controllers Display
Standard floppy disk controller
Primary IDE Channel [Controller]
Secondary IDE Channel [Controller]
VIA Bus Master IDE Controller VIA/S3G UniChrome Pro IGP [Display adapter]
Default Monitor
Bus Adapters Multimedia
VIA SATA RAID Controller
VIA Rev 5 or later USB Universal Host Controller (4x)
VIA USB Enhanced Host Controller C-Media AC97 Audio Device
Communications Other Devices
Conexant USB Network Adapter
primary Auto IP Address: 10.0.0.9 / 8
Gateway: 10.0.0.2
Dhcp Server: 10.0.0.2
Physical Address: 00:06:4F:12:07:EB
VIA Compatable Fast Ethernet Adapter
Dhcp Server: none responded
Physical Address: 00:13:8F:5E:09:23
Networking Dns Server: 10.0.0.2
Built-in Infrared Device
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
Microsoft PS/2 Mouse
Conexant USB Network Interface
USB Root Hub (5x)
Virus Protection [Back to Top]
AVG Anti-Virus 7.1.375 Version 7.1.375
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Missing Microsoft Security Hotfixes [Back to Top]
All required security hotfixes (using the 01/10/2006 Microsoft Security Bulletin Summary) have been installed.
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KB891781 on 24/02/2006 (details...)
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KB893803V2 on 24/02/2006 (details...)
KB894391 on 24/02/2006 (details...)
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KB896358 on 24/02/2006 (details...)
KB896422 on 24/02/2006 (details...)
KB896423 on 24/02/2006 (details...)
KB896424 on 24/02/2006 (details...)
KB896428 on 24/02/2006 (details...)
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KB901017 on 24/02/2006 (details...)
KB901214 on 24/02/2006 (details...)
KB902400 on 24/02/2006 (details...)
KB904706 on 24/02/2006 (details...)
KB905414 on 24/02/2006 (details...)
KB905749 on 24/02/2006 (details...)
KB905915 on 24/02/2006 (details...)
KB908519 on 24/02/2006 (details...)
KB910437 on 24/02/2006 (details...)
KB911927 on 24/02/2006 (details...)
KB912919 on 24/02/2006 (details...)
KB913446 on 24/02/2006 (details...)
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Belarc, Inc. - Advisor Version 7.0t *
ChoiceMail Free 3.1 *
Cinematronics - 3D Pinball Version 5.1.2600.2180 *
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DivX 6.1.1, DivX Player 6.1.1 (DVXA) Version 1.0.0.161 *
DivX Player Version 6,1,0,0 *
DivXNetworks Inc. - Config App. Version 2, 0, 0, 1 *
DivXNetworks, Inc. - DivX EKG Version 1.0.0.0 *
GeneralUninstall Application Version 2, 0, 0, 9 *
GRISOFT, s.r.o. - AVG 7.0 Anti-Virus System Version 7.1.0.349 *
GRISOFT, s.r.o. - AVG Anti-Virus System Version 7.1.0.371 *
iCentric Corp. 2003 - DriverGuide Toolkit Version 1.01 *
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InterActual Technologies, Inc. - PCFriendly Version 2.01.05.1121 *
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Microsoft Corporation - Internet Explorer Version 6.00.2900.2180 *
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Please help and thanks