|Look you are behind a router right?|
That means no security issues OK?
An ipconfig /all will tell me things you can't see [well I can always hope].
Post them as requested. Thanks.
While doing that also bring up task manager under both boots and compare running apps/processes. What is not running in safe mode but is running in normal is what you want to be looking at. In normal mode end task one at a time to figure out which is having the impact [start with firewall/norton/protection apps since they are most suspect]
after each end task, assuming dhcp client, do a ipconfig /renew to see if you get an ip