Krdytkyu

First of all I am new to the site and Ubuntu. I have a Lenovo IdeaPad Z570. Original Os was Win7. Later I had installed Win10. I used to use it with Airplane Mode and WiFi both on. Don't ask me why please. One day OS crashed and thanks to the help of a friend Win7 and Win10 were together installed on the computer. However wireless and Nvidia graphic card didn't work after this installation. I decided to install Ubuntu 18.04. At first during the installation it showed WiFi on and even connected to my home network. Due to a mistake it stopped the installation. In second attempt it was installed successfully but this time airplane mode is on and wifi is not working. There is no physical Airplane-Mode switch on my laptop.

Output of rfkill list all:

0: phy0: Wireless LAN

    Soft blocked: no

    Hard blocked: yes

Fn+F5 is WiFi switch but it doesn't change anything.

I have googled the issue and tried
# rfkill unblock all sudo ifconfig wlp3s0 up

*-network DISABLED

            description: Wireless interface

            product: Centrino Wireless-N 1000 [Condor Peak]

            vendor: Intel Corporation

            physical id: 0

            bus info: pci@0000:03:00.0

            logical name: wlp3s0

            version: 00

            serial: 74:e5:0b:49:bf:12

            width: 64 bits

            clock: 33MHz

            capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless

            configuration: broadcast=yes driver=iwlwifi driverversion=4.15.0-43-generic firmware=39.31.5.1 build 35138 latency=0 link=no multicast=yes wireless=IEEE 802.11

            resources: irq:29 memory:f1500000-f1501fff

    *-pci:3

         description: PCI bridge

         product: 6 Series/C200 Series Chipset Family PCI Express Root Port 4

         vendor: Intel Corporation

         physical id: 1c.3

         bus info: pci@0000:00:1c.3

         version: b5

         width: 32 bits

         clock: 33MHz

         capabilities: pci pciexpress msi pm normal_decode bus_master cap_list

         configuration: driver=pcieport

         resources: irq:19 ioport:2000(size=4096) ioport:f1400000(size=1048576)

       *-network

            description: Ethernet interface

            product: RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller

            vendor: Realtek Semiconductor Co., Ltd.

            physical id: 0

            bus info: pci@0000:04:00.0

            logical name: enp4s0

            version: 05

            serial: f0:de:f1:94:67:6e

            size: 100Mbit/s

            capacity: 100Mbit/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 autonegotiation

            configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8105e-1.fw ip=192.168.0.117 latency=0 link=yes multicast=yes port=MII speed=100Mbit/s

            resources: irq:19 ioport:2000(size=256) memory:f1404000-f1404fff memory:f1400000-f1403fff

Please tell me if I need to give anymore information to make it clear. Any help is appreciated. Thank you.

On the Lenovo Z570 there is a switch on the front edge of the keyboard that will toggle the hard block as seen in the picture on Lenovo forums https://forums.lenovo.com/t5/Lenovo-P-Y-and-Z-series/Z570-I-can-t-turn-on-WiFi/m-p/1434903/highlight/true#M86704