How to root my Lenovo A690?

To root easily download unlock root pro from its official website. Then install it and drivers for your lenovo a690 on your pc, enable usb debugging in your smartphone, connect your pc and smartphone using datacable, now open the software which you have installed b4(unlock root pro) you can see at left bottom corner root button
press and be patient your phone will restart.

hurray you have rooted your phone you can see super user icon in menu

You don't root a laptop, but if you want ultimate control, encrypt your hard drive and change your BIOS serial number and part numbers associated with your 4rth amendment.

Use a rooter