We just finished building this computer it's a gigabyte motherboard model F2A85X-up4. Up till the last two days it has worked and functioned great. But then suddenly it became slower than molasses pulling up any program or site. Then it started losing wifi. On the repair window it said no network adapter installed. We are using a netgear wireless adapter, WNA 1100. I have ran ccleaner no good. Can some please tell us where and what the driver would be called and where to find it. Thank you