Hey guys, just reinstalled windows XP and now my sound doesn't work

. Hopefully someone can point me in the right direction.
Not sure if it is any help, but I have my entire C:/ drive backed up on my 2nd HD from before I reinstalled XP.
Operating System System Model
Windows XP Professional Service Pack 2 (build 2600) IBM 6794NZU
System Serial Number: KA86TK4
Enclosure Type: Mini-Tower
Processor a Main Circuit Board b
1.60 gigahertz Intel Pentium 4
8 kilobyte primary memory cache
256 kilobyte secondary memory cache Board: IBM IBM
Bus Clock: 100 megahertz
BIOS: IBM 20KT38AUS 09/19/2002
Drives Memory Modules c,d
204.71 Gigabytes Usable Hard Drive Capacity
92.13 Gigabytes Hard Drive Free Space
Thanks for any help in advance.