I have bought a Raspberry Pi 3 model B (UK) and wanted to start working with it. Following the online tutorials, 

* I downloaded Raspbian from [here][1] and used Etcher to write the ISO file on my SD card. 

* Then I inserted the SD card into my RPi and plugged in the LAN & HDMI cable into my laptop and RPi. 

* Then I plugged in the power cable from my 2.1A android charger but nothing happened on my laptop. Only the red LED and a blinking green LED and 2 Ethernet LEDs turned on on the board. 

I compared the SHA-256 hash from my ISO file and the one on the website and **they were not the same**.  

Is that the reason why my RPi didn't work? What should I do now ?

  [1]: https://downloads.raspberrypi.org/raspbian_latest