rfkill - Wireless Hard Block

I have a Lenovo Yoga 2 11" with Ubuntu 13.10 (x64). I have just a litle problem with my wifi. (bluetooth is working)

I tried:

sudo rfkill list

Status:

0: ideapad_wlan: Wireless LAN
    Soft blocked: no

    Hard blocked: yes
1: ideapad_bluetooth: Bluetooth
    Soft blocked: no
    Hard blocked: yes
2: phy0: wireless LAN
    Soft blocked: no
    Hard blocked: no
3: hci0: bluetooth
    Soft blocked: no
    Hard blocked: no

next:

sudo rfkill unblock all
sudo rfkill unblock number

They work only soft block ... my hard block is still on "yes".

My yoga has not hardware button. I tried settings in bios, but not working.

If anyone has any other solution I will be very grateful.