First of all, hello everyone. I'm new to the forum but i'm glad to be one board. A couple of weeks ago I built a new desktop for myself but kept my old harddisk and therefore kept all my files. I upgraded to Win 7 Home Premium from Vista Home Premium as well. When I turn on my pc I connect to my router as normal but it has problems identifying the network and usually defines it as a public network (even though the network at on is definitely my private network) and promptly doesn't give me internet access. Occassionally I do manage to connect to the internet successfully, however when this happens I get an error message when opening my browser (and indeed all browsers) saying that DNS Lookup has failed. The issue with not connecting to the network successfully appears to be ip related, as diagnosing the problem results in a message that my wireless network adapter does not has a valid ip. I have renewed my ip address to no avail. As far as the DNS Lookup Failure goes IP and DNS are both set to assign automatically, although I have tried manually setting the DNS to Google's server (188.8.131.52) just to see what happens (nothing). I have disabled my firewalls and made sure that the browsers are allowed through. I have, of course, reset my modem several times which doesn't help. I also flushed the dns just to see if that did anything. I've had a quick look at my router settings but I'm hesistant to change anything since I don't know much about it and I have housemates that also connect through the router. As far as my internet adapter goes, I'm using an old D-Link g-110 which hasn't every given me any problems. I've also made sure that the drivers for this are up to date. Any help would be wonderful, I'm quite sick of having no internet. Thanks.