sony vaio laptop audio problem

i recently installed windows xp pro on my sony vaio laptop VGN-S series.
everything went well. i made the system restore cds and searched online for step by step instructions.

there's only one problem. there was no sound.
(initially, the modem was not working either.)
i checked the system profile, it indicated that the audio high definition device has no driver.
after some googling, i found out there's xp sp2 updates needed to be installed.

the updates are kb835221 and kb888111. they can be found through google.

here is another copy of kb888111 xpsp2, if the other one doesn't work.

so what i did was uninstalled audio device from system profile. reboot. run kb835221, then run kb888111 xpsp2. (the kb888111 didn't work for my laptop. don't know why.)

then run the audio driver from system restore disk. which can be found in folder
vaio\Drivers\Audio

after installed the driver, reboot.

that solved my problem.