How To Fix A Cracked Monitor

So, your laptop screen is not working but the external monitor does? That is never a good thing.

It means that your graphics card driver or monitor is bad, your LCD backlight bulbs have broken, etc. But after reading this guide, you'll be able to diagnose and fix this problem in 10 minutes or less.

Laptop Screen Won't Turn On But Works With External Monitor

It is a common problem in laptops; your laptop screen is not working, but the external monitor does.

Laptops are important and valuable to many people. In some cases, they serve as a source of entertainment, but it is more than just that for others.

Laptops can hold data that could range from personal photos or documents needed for work purposes - so when the laptop does not boot up properly, panic may set in because it means your device cannot do what you need it to.

There are many reasons why the laptop screen is black, but there's almost always an easy fix if it still falls under your warranty.

connect monitor and a laptop

Contact your Retailer if Laptop is Still Under Warranty

If you can't figure out how to repair it yourself or aren't willing to risk voiding your warranty by taking apart your computer, contact whoever sold/manufactured your laptop for repair or help.

The manufacturer will get you replacement parts as soon as possible, and you will avoid incurring any fees from third-party service providers who may charge more than what was estimated before completing repairs.

Fix The Problem Yourself

If your warranty has expired, the first thing you should do before you do anything else is to check whether the problem is just with the laptop display or with the laptop. For that, connect your laptop with an external monitor (see also external monitors for MacBook Air).

If your laptop display isn't working, but you can see it on an external monitor, the problem is with your laptop's screen and not its connection. If this is the case, then start to diagnose why there might be a disconnection between your computer and its screen (see also 'How to Fix Laptop Screens').

What Can Cause a Laptop Screen Not to Display but External Monitor Does

A Problem with The LCD Display Back Light

One of the most frustrating problems with a computer or laptop is when an LCD monitor's light bulb burns out. It can happen for many reasons, such as being dropped or bumped on its screen, exposure to heat, improper use in environments that cause dust accumulation over time, etc.

There will be no picture displayed when this happens because backlights allow images to display correctly on the screen or monitor.

Laptop Screen Damage

A laptop can drop off the bed during sleep or slide off the table when you get up from the chair. Such accidents cause physical damage to the screen or other laptop components and may also affect your laptop's display.

Physical damage to any component of the laptop screen or monitor can make it dysfunctional. In the event that your laptop screen has been damaged, you might be able to make repairs yourself. However, if it is extensive damage, a professional will need to come in and take care of things for you.

Corrupted Graphics Drivers

A problem with your graphics drivers can lead to a laptop's screen not working, but an external monitor does just fine. The graphics card or simply known as a video card, is a special device integrated with computer hardware whose purpose is to display images on your monitor.

A graphics driver is software that communicates between hardware and software on your computer's motherboard.

To fix this issue, all you have to do is update the display driver.