Before you decide to replace your erring laptop screen, it is advisable to go ahead and troubleshoot the niggling problem. Physical and obvious damages to the laptop screen will definitely require full replacement, but some other types of visible damage to the laptop screen may not be caused by the display screen itself. Some of which are as follows:

Pixel problems
Sometimes you may not be able to read from your and it may be attributed to damaged pixels. Laptop screen uses Liquid Crystal Display (LCD) to display images. Thousands of Pixel or little dots constitute an image and show it on your screen. Damaged pixels in an area will not show the image properly on your screen.  In worst case you will be required to replace your screen.

Faint images
Sometimes the backlight, that is responsible for visibility of your screen, does not work. It renders your screen difficult to read. Try to open and close your laptop a few times and gently tap the backlight switch and see whether this help. You can also use a small pin gently to free the stuck backlight switch.

Flickering screen
An inverter problem can cause your laptop screen to flicker on and off. Inverter is an important component that supplies power to the backlight of the screen. Inverters are ease to replace.

Solid White Screen
If your laptop screen goes solid white, as showed above, the problem may be caused by a bad cable connection between the monitor and the system board. To resolve this you can open up your laptop and ensure that the cables and connection are not damaged.

Jumbled images
Sometimes you may find that all the images on your laptop screen are jumbled which may be caused by a faulty video card. To find out whether your screen is causing the problem or not, you can connect your laptop to another monitor, using the VGA port. If the external monitor also shows jumbled images, then it is your video card rather than your laptop screen that is causing the problem.