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#11
redrhyski,
Does the LED in front of your router light up for the port that's connected to your PC? Say you plug PC to port 1, is the LED indicator for port 1 light up when you plug your PC? If it lit up, then the problem lies with your PC, not the router. Here's what you can do, go to one of your laptop/PC that's working, check the IP address, try a "Manual IP address", put an IP address that is close to other computers (say you see your laptop has 192.168.0.10, use 192.168.0.11 for your PC). Match the other numbers as others computer's, everything other than IP address MUST BE THE SAME as other PC, that includes "subnet mask", "default gateway", "preferred dns server". Report back when you're done.
zzz2496
Edit: Don't use an IP address that's already used by other PCs, it will bark at you.
Edit2: If you use manual IP addressing, and it connects, then the problem lies with your Windows 7 installation, check in control panel => administrative tools => services => DHCP client, make sure it's running.