I'm not able to enable Wireless using the hardware switch on my HP ProBook4430s.

Because of this the Enable Wireless option is greyd out and I cannot enable it.

The greyd out option can be seen in the screenshot below.

enter image description here

The results of iwconfig for my system are as follows,

lo        no wireless extensions.

wlan0     IEEE 802.11bgn  ESSID:off/any  
          Mode:Managed  Access Point: Not-Associated   Tx-Power=off   
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off

eth0      no wireless extensions.

Also I tried to do the following,

    sudo ifconfig wlan0 up

but I got an error as below,

    SIOCSIFFLAGS: Operation not possible due to RF-kill

Also the result of sudo rfkill list all for my system is as follows,

0: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: yes
1: hp-wifi: Wireless LAN
    Soft blocked: no
    Hard blocked: no
2: hp-bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: no
3: hci0: Bluetooth
    Soft blocked: no
    Hard blocked: no

How do I fix this problem?


  • Try posting the results of iwconfig.
    – Onyris
    Commented Jun 15, 2012 at 11:28

2 Answers 2


Try when booting your computer:

  1. press f2? to get into bios
  2. press f9? to reset to default settings
  3. press f10? to save settings

Check if you're still hard blocked.

[keys are for my laptop which isn't a dell]

  • this is probably the best answer around. got stuck with HardBlocked: yes, for some reason WiFi adapter has been disabled, and WiFi Hard Key (HP ProBook 6560b) didn't work since there are no default mapping in linux for it.
    – Tomo
    Commented Aug 25, 2014 at 14:51

Try doing

sudo rfkill unblock wlan


sudo ifconfig wlan0 up

And report, by editing again your post, if there are errors.

  • Thanks for ur answer. But the problem is still existing! And I edited my post as you said. Please do the needfull. Thankyou.
    – Sat93
    Commented Jun 16, 2012 at 8:48

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .