When I run

iwconfig

it say's lo and eth0 have no wireless extensions, but wlan0 it says

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

and I believe that's my problem, I just don't know how to turn it back on

Any help?

When I ran

lspci | grep Network

it gave me this

02:00.0 Network controller: Intell Corporation Centrino Wireless -N + 
WiMAX 6150 (rev 67)

How I know that my wireless is hard blocked because when I run

sudo rfkill list all

I get

0: Ideapad_wlan: Wireless LAN
Soft blocked: no
Hard blocked: no
1: phy0: Wireless LAN
Soft blocked: no
Hard blocked: yes

when I run

lshw -c network

I get.

*-network DISABLED      
   description: Wireless interface
   product: Centrino Wireless-N + WiMAX 6150
   vendor: Intel Corporation
   physical id: 0
   bus info: pci@0000:02:00.0
   logical name: mon1
   version: 67
   serial: 40:25:c2:d2:96:2c
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress bus_master cap_list logical wireless ethernet physical
   configuration: broadcast=yes driver=iwlwifi driverversion=3.2.0-32-generic-pae firmware=41.28.5.1 build 33926 latency=0 link=no multicast=yes wireless=IEEE 802.11bgn
   resources: irq:43 memory:d0500000-d0501fff
*-network
   description: Ethernet interface
   product: RTL8111/8168B PCI Express Gigabit Ethernet controller
   vendor: Realtek Semiconductor Co., Ltd.
   physical id: 0
   bus info: pci@0000:03:00.0
   logical name: eth0
   version: 06
   serial: f0:de:f1:d7:a0:4d
   size: 100Mbit/s
   capacity: 1Gbit/s
   width: 64 bits
   clock: 33MHz
   capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
   configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8168e-2.fw ip=192.168.0.65 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s
   resources: irq:41 ioport:2000(size=256) memory:d0404000-d0404fff memory:d0400000-d0403fff