XP reformatted, now not detecting microphone, speakers, or webcam

[emsell]

Hi-
Our pc was corrupted and we had to reinstall windows XP Pro. Everything stayed plugged in as it was prior to the re-install, but now it wont detect the speakers, webcam or microphone.
If I go into the control panel into the sound/audio tab, every button is inactive- it wont let me change or add anything and just says that there is no audio device, no sound device, no recording device.
Any help would be great-

[jblab]

Did you reinstall all drivers?

[emsell]

I did, but the hardware is all plug and play and the pc wont even recognise they are there...

[Allan]

I'm going to bet you forgot to install the chipset driver.

[Spoiler]

Do you know that make and model of your machine? Or at least the motherboard?