Wireless network not visible on Win 7

My pc is not detecting the wireless network of my wireless router ( TP-Link TL-WR543G ). I can connect to the WLAN with other devices ( two different phones, Android and Win mobile ), but my pc doesn’t even see it. My network adapter is Ralink RT3290 802.11 bgn Wi-Fi adapter. I’ve already installed the latest drivers for it, but with no results. Any ideas?
Answer #1
Try connecting manually
http://www.dummies.com/how-to/content/how-to-find-a-wireless-network-using-windows-7.navId-397922.html
if it doesn’t work, try one of those:
http://windows.microsoft.com/en-id/windows-vista/troubleshoot-problems-finding-wireless-networks
Btw these are also the first results on Google.