I reformatted my Windows XP and now there is no sound...?

I took my laptop to a computer driver specialist? He fixed it in 5 minutes? I'm glad I didn't throw it in the river? I did buy this for 2,000? That's insane? Thanks again? Oh by the way, didn't need a sound card? There is some kind of an issue with Gateway notebooks? There seems to be a lot of people who install new hard drives in Gateway notebooks that cant find the right drivers? Even on there site? Think my next laptop will NOT be this ever again? I even got those stupid HINGES falling off?? When I called them about it?, They told me its not there problem?? Thanks again, Lee