STEP 1. First of all download Unlock Root Software on your computer.
Download free version because it
works for most of the devices.
STEP 2. Now run setup to install this software on your computer.
STEP 3. After installation run the software.
STEP 4. Now connect your android device to
computer using USB cable and then
install your device drivers. If you
don’t have drivers then you can
download these from internet.
STEP 5. Now go back to software and search for “root” button and click on it.
STEP 6. After clicking you see a list of devices. Find yours and select it.
STEP 7. Now start rooting and software will
tell you when its complete by a
confirmation message.
STEP 8. After successful completion
disconnect your android phone or
tablet from computer.
STEP 9. Now restart your device and you have done.