Welcome gellis
Please run option 2 in this tutorial and post a snip of ipconfig /all. This may give some insight into what you have going on. Good luck to you with your problem. IP Address - Locate and Find for Your Computer
System Manufacturer/Model Number Gateway GT5692 OS Windows 7 Ulti. x64 CPU AMD Phenom 8450 triple-core 2.10 ghz Memory 4GB Graphics Card ATI Radion HD 3200 Monitor(s) Displays Gateway FPD1775W Screen Resolution 1280x720