I cant hear sound after reinstalling my comp

Hello,

sir i reinstalled my computer and i was having all the driver but i messed up my sound driver by mistake . so please please help me sir i cant hear any sound from my comp .i am using windows xp service pack 2 build 2600.

OS Name Microsoft Windows XP Professional
Version 5.1.2600 Service Pack 2 Build 2600
OS Manufacturer Microsoft Corporation
System Name SYEDBILALHAIDER
System Manufacturer INTEL_
System Model D845GVS1
System Type X86-based PC
Processor x86 Family 15 Model 3 Stepping 4 GenuineIntel ~1499 Mhz
Processor x86 Family 15 Model 3 Stepping 4 GenuineIntel ~1499 Mhz
BIOS Version/Date Intel Corp. VA84510A.86A.0030.P10.0402160229, 2/16/2004
SMBIOS Version 2.3
Windows Directory C:\WINDOWS
System Directory C:\WINDOWS\system32
Boot Device \Device\HarddiskVolume1
Locale United States
Hardware Abstraction Layer Version = "5.1.2600.2180 (xpsp_sp2_rtm.040803-2158)"
User Name SYEDBILALHAIDER\Administrator
Time Zone Pacific Daylight Time
Total Physical Memory 512.00 MB
Available Physical Memory 266.34 MB
Total Virtual Memory 2.00 GB
Available Virtual Memory 1.96 GB
Page File Space 1.22 GB
Page File C:\pagefile.sys