Thank you for the reply, But none of your suggestion worked.
1)i tried reinstalling wireless driver, didnt help
2) Windows 8 driver is available so i ve installed the latest driver in laptop (qualcom atheros, Laptop :asus k55vm)
3)changing wifi mode, didnt help
4) changing the encription : university wifi doesnt support TKIP.
In few forum they says that installing windows 7 driver will resolve the issue but now when I tried installing windows 7 driver in compatibility mode driver is not getting updated in network adapter it just install the software doesnt update the
Do you any other solution? i am really in great dilemma, i am not able to work and i am wasting my time by going to computer lab just for accessing internet.