Re: problem with internet explorer.
You have to find out what kind of sound card you have. If it was a branded PC like HP/Dell, etc. then you can go to their website and under support you will be able to find all your drivers (Video, Audio, Lan, Chipset, etc.)
If you're not sure what brand pc you have or if it's a custom-built pc, do the following:
Start
All Programs
Accessories
System Tools > System Information
Once you have the System information pulled up, click on Components and the Audio, on the left hand side it will show the manufacturer of your sound device. Then you may go to the manufacturer's website of that device and download their drivers directly.