Have you installed the latest Windows 8 drivers for your Laptop/wireless drivers? I have a samsung notebook 5 series npu3c and i have the same problem. Hello, I bought this laptop 2 days ago and it's already giving me a headache. The wireless doesn't work as it supposed to do. It can't load. " Series 5 Slim Notebook GB HDD NPU3C. Solutions & Tips, Download Manual, Contact Us. Samsung Support UK.