Okay, as in the other thread, step one is to try another browser. You have Internet Explorer already, and you also have Chrome or Opera to pick from. If that one works, then you know it is not your hardware. Step 2, uninstall Firefox. Step 3, test that second browser again to make sure it didn't pull out any kind of association to the hardware with it. Step 4, reinstall Firefox. It's very important that you don't just install Firefox over itself. Remove it and reinstall.