My modem (Siemens SpeedStream 4100) and router (Linksys WRT120) both function properly, but my desktop computer (HP-Pavillion Elite m9077c) won't connect to the internet. I never had a problem connecting up until a month ago, but since then, nothing. I know the modem and router function properly because all the wireless devices in our house (e.g., laptops, Wii, xbox) can still connect, and I can plug an ethernet cable into the router and the laptop and it connects. The device manager on the desktops says that the network adapter (Intel 82566DC-2 Gigabit) and the wireless adaptor (USB wireless 802.11 b/g) are functioning properly.
I tried several things to try to resolve this, such as, disabling the Windows firewall, but no luck. At this point, I think I need to work through this systematically, and that's where I need your help. Whatever information you need from me, let me know, and I'll provide it.
Below is a screen shot of my ipconfig/all.
Thanks in advance.