First you need the motherboard chipset driver located HERE.
Now on that same page you will need to get the following drivers downloaded and installed:
- Network... Intel driver at the bottom of the list
- Video .... Ati 2nd one in the list if that is the card you have
- Audio... first one
- Communication...Modem driver is the first one I believe
From there after all is installed and you have rebooted to make sure they all are installed recheck your Device Manager for yellow exclamation marks and post with results.