actually i could see the essid iwlist wlan0 scan , but still no Access Point is there and Quality Signal 0/100
here are the output of some of my commands , that i have alraedy tried , it would be of assistance to you ,
linux-qzyt:/home/fedexpress # iwconfig
lo no wireless extensions.
wlan0 RT61 Wireless ESSID:“K-Hostel” Nickname:""
Mode:Managed Frequency:2.412 GHz Bit Rate=54 Mb/s
RTS thr:off Fragment thr:off
Link Quality=0/100 Signal level:-121 dBm Noise level:-111 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
eth0 no wireless extensions.
What should be done further!!!