This is quite the ordeal
Bran, how is it going bro? your whole problem was not following the mantra of network troubleshooting:
1. Ping your loopback interface
2. Ping your default gateway ethernet interface
3. Ping your default gateway WAN interface
4. Try to resolve a name in your network
5. Try to resolve a name outside your network.
OK, this was not the issue, but yep, hopefully you are OK now and getting all sort of porn downloaded.
My recommendation, as I write to you MONTHS AGO YOU SHITHEAD, once you have the laptop setup ENTIRELY SETUP, with everything just the way it is supposed to be (tweaks, settings, drivers, SP2, firewall, ANTiVIRUS with subscription until 2043, etc).
Find Norton Ghost or any other disk-imaging software and BURN a DVD image of your laptop. It turns this nightmare into a :
1. Insert Image DVD (a single 4GB disk will hold all your setup)
2. Wait 20 mins
3. new machine ready to go
Make sure you NEVER store data on your system disk. Your system disk should be one that you could reinstall in the blink of an eye, with no questions asked.
That habit of having a shiload of data on your desktop? BAD IDEA, that spells disaster. Keep it on another disk or a partition and keep only LINKS on your desktop.