i have similar problem with multimedia audio controller,i have downloaded the original driver it wont load, i have no volume controls and i get a no mixer error when i click on the volume control,i have noticed that the bios has some of its features disabled ,problem seems to stem from the fact that i formatted the hard disc,it was suggested i flash the bios,so i have run belarc,any help thanks in advance.

i have pasted the following info
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Operating System System Model
Windows XP Home Edition Service Pack 2 (build 2600) iQon.ie 7VM400M-RZ rev 1.0
Enclosure Type: Desktop
Processor a Main Circuit Board b
2.00 gigahertz AMD Athlon XP
128 kilobyte primary memory cache
512 kilobyte secondary memory cache Board: Gigabyte Technology Co., Ltd. 7VM400M-RZ x.x
Bus Clock: 167 megahertz
BIOS: Award Software International, Inc. F4c 06/14/2005
Drives Memory Modules c,d
80.02 Gigabytes Usable Hard Drive Capacity
66.67 Gigabytes Hard Drive Free Space
PHILIPS DVDR1628P1 [CD-ROM drive]
3.5" format removeable media [Floppy drive]
SONY Storage Media USB Device [Hard drive] (123 MB) -- drive 1
WDC WD800BB-00JHC0 [Hard drive] (80.03 GB) -- drive 0, s/n WD-WCAM99006622, rev 05.01C05, SMART Status: Healthy 224 Megabytes Installed Memory
Slot 'A0' has 256 MB
Slot 'A1' is Empty
Local Drive Volumes
c: (NTFS on drive 0) 80.02 GB 66.67 GB free