3 Steps to test the laptop before you buy it

Test time the computer boot from pressing the power button until the laptop is ready to run Take a stopwatch or using mobile phone stopwatch.
    1.Test the keyboard open a file, writing and test buttons.
    2.Test the screen colors you are comfortable or are pale colors.
    3.Test the touchpad mouse you saw is working well or not.

These are the basic steps that should be carried out after you have selected any laptop computer. 
Test the sound effect.
And check out the mark in the internet.

by Lord Alio