Calibrating your Laptop display is an important step, so many reason possible but one and simple reason is that: User want the colors and black levels to look as accurate as possible. The most understandable benefit of appropriate calibration is that it ensures the best results when you're editing or viewing images.

2. When viewing images on an LCD (Liquid Crystal Display)
monitor, the images should be crisp and clear and the colors
should be rich and vibrant. Typically, setting the LCD monitor
colors to its native resolution (the LCD monitor's initial display
setting provided by the manufacturer) should provide the
optimal image. However, if the native resolution setting is not
delivering the best appearance, the LCD monitor settings can
be easily calibrated to enhance the screen's appearance.

3. Adjust LCD Monitor Resolution
1. Ensure that no other programs are running.
2. Move the cursor over "Start" (or the Microsoft
Windows logo) from the lower left hand corner of the
screen, single click, and hold the mouse button down to
view other menu items. And Select "Control Panel.“
3. Locate the heading, "Appearance and Personalization,"
then select the sub-category, "Adjust screen
resolution."

4. 4. Click "Resolution" and wait for a drop-down slider control
to appear.
5. Drag the slider up or down until the desired resolution is
selected. Click "Apply." If a compatible resolution was
chosen, the screen will revert to these settings (If the
resolution is incompatible, select another resolution).
6. Wait for the system to ask if the settings are acceptable. Select
"yes" if the settings are accurate, otherwise continue changing the
resolution until the desired effect is achieved.