Since my laptop doesnt have a wireless card, i got a wireless USB for it. The problem is that when it tries to find connections, mine doesnt show up. Even when i place my laptop next to my router, it still wont pick it up. At times it does show up, claims to have a low connection, and tries to connect but it then disappears again and doesnt connect after all. What should i do in this situation? Nothings wrong with the USB and it is compatible with my wifi so whats wrong?