Hi every one !
i use centos 6 64 bit for long , last week a friend try to boot scientific linux 32 bit in my machine and the wireless got disabled instead and no way to re enable upto now
on command : iwconfig
it returns
lo no wireless extensions
eth0 no wireless extensions
wlan0 IEEE 802.11abg ESSID

ff/any
Mode :managed access point : Not-Assopciated Tx-Power=off
Retry long limit:7 RTS thr

ff Fragment thr

ff
Encryption key

ff
Power Management

n
Can any one help me on this