save me bookworm!!!

[pacifist_101]

friends laptop needs some real love. i reinstalled windows to be a nice guy but i lost the sound!!! im no genius but i have never had problems like this.
heres my specs.

Windows XP Professional Service Pack 3, v.3282 (build 2600)
Matsushita Electric Industrial Co.,Ltd. CF-51LCRDLBM 002
Board: Matsushita Electric Industrial Co.,Ltd. CF51-2L 001
Bus Clock: 533 megahertz
BIOS: Phoenix Technologies K.K. V2.50L11 12/12/2005
1.73 gigahertz Intel Pentium M
64 kilobyte primary memory cache
2048 kilobyte secondary memory cache
Controllers
Intel(R) 82801FBM Ultra ATA Storage Controllers - 2653
Primary IDE Channel [Controller]
Secondary IDE Channel [Controller] None detected
Bus Adapters
Ricoh R/RL/5C476(II) or Compatible CardBus Controller (2x)
Intel(R) 82801FB/FBM USB Universal Host Controller - 2658
Intel(R) 82801FB/FBM USB Universal Host Controller - 2659
Intel(R) 82801FB/FBM USB Universal Host Controller - 265A
Intel(R) 82801FB/FBM USB2 Enhanced Host Controller - 265C

please whatever help you can provide would really get me out of some hot water. thanks eversomuchly