No Sound on a WinFast board please help

[Chaser]

help my dad went though and uninstalled a lot of my programs and then next time I boot up my computer their is no sound and every time I log on it wants to installed a new hardware please help someone

-----Chaser


Operating System

Windows XP Home Edition Service Pack 2 (build 2600)

Processor

2.00 gigahertz AMD Sempron
128 kilobyte primary memory cache
128 kilobyte secondary memory cache

Drives

80.02 Gigabytes Usable Hard Drive Capacity
15.24 Gigabytes Hard Drive Free Space
ATAPI CD-R/RW 8X4X32 [CD-ROM drive]
PIONEER DVD-ROM DVD-116 [CD-ROM drive]
3.5" format removeable media [Floppy drive]
ST380013A [Hard drive] (80.03 GB) -- drive 0, s/n 3JV2G8ZJ, rev 3.06, SMART Status: Healthy

Controllers

Standard floppy disk controller
Primary IDE Channel [Controller]
Secondary IDE Channel [Controller]
SiS 5513 IDE UDMA Controller

Main Circuit Board

Board: WinFast 760GXK8MC
Serial Number: WYWP54008593
Bus Clock: 200 megahertz
BIOS: Phoenix Technologies, LTD 6.00 PG 08/30/2005

Memory Modules

768 Megabytes Installed Memory
Slot 'A0' has 256 MB
Slot 'A1' has 512 MB

Display

NVIDIA GeForce 6600 GT [Display adapter]
ViewSonic VA902b [Monitor] (19.1"vis, s/n PSW054470992, October 2005)

Multimedia

SiS 7018 Audio Driver

Other Devices

Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
PS/2 Compatible Mouse
USB Root Hub (4x)