If you installed a new screen into the laptop and for some reason it doesn’t work, there may be a few  things you could have done wrong. Lets figure out step-by-step how to troubleshoot and  and fix the problem. First of all, I assume that your new LCD is compatible with the original one. If the screen looks identical, it doesn’t exactly mean it’s compatible. Double check the compatibility between the original and new LCDs. The old style screens have a backlight lamp inside and require an inverter board which is usually mounted on the lower part of the display assembly, as you can see on the following picture. On the following picture you can see how the screen connected to the laptop. Also, check out this display diagram. The video cable routed from the motherboard to the display through one of the hinges. Somewhere close to the hinge, the cable splits. The wider end connects to the screen (supplies data signal) and another one to the inverter board (supplies power for inverter).

If your new screen lights up but has no image make sure the video cable plugged correctly. Teacup Yorkies For Sale In Salt Lake City UtahIt’s possible that during the reassembly process you accidentally pulled the cable from the connector.Super Gloss Laminate Flooring Reconnect the cable, secure the connection with sticky tape and test the laptop. Exotic Shorthair Cat For Sale ScotlandThere is a chance that now the screen will work properly. The video cable has to be seated properly, all the way down into the connector. Some older LCDs have very thin pins inside the video connector as it shown on the following picture. Take a look inside, make sure there are no damaged (bent) pins.

It’s possible that you accidentally bent them while trying to plug in the cable. You can straighten bent pins with a very small screwdriver. Be careful, they are very fragile. Fortunately, most newer LCDs have a different type of connector, without any pins inside. OK, you have reseated all cables but it still doesn’t work. If your original screen was cracked but undamaged areas still work and show some image, you can use it to test the laptop. Disconnect the new LCD and install the old damaged one back in place. If the old screen still works but the new one doesn’t, your new screen is defective. Send it back to the seller for a replacement.The new screen kind of works. You can see a very faint image but there is no backlight. Disconnect the new screen from the inverter board and plug in the old screen instead (I assume it has working CCFL), as it shown on the picture below. If the original screen lights up, apparently the new screen has defective backlight lamp.

Newer LED-backlit LCDs have only one cable connected to it. This cable supplies data signal and power for LED backlight. If your new screen doesn’t work, check the connection first. Make sure the cable seated properly, all the way down into the connector. You can test the computer with the old, partially working screen, as we did earlier. If the old one still works, but the new doesn’t, your new screen is defective or not compatible. Also, you might be interested in how to troubleshoot bad video. You can support my work!I saw this on PC Advisor and thought you should see it too. Our HelproomEditor explains how to go about rescuing files and folders from your laptop, if the screen is broken so you cannot see what you are doing. See also: how to fix a broken laptop screen. QUESTION I dropped my laptop and now see a black screen when I switch it on. I want to get a new laptop under warranty, but first need to remove my data from the hard drive. It has an HDMI port, so I tried connecting the laptop to an external monitor and pressing the Fn and F1-9 keys, but I can't get a connection.

The screen says no HDMI input found. HELPROOM ANSWER First, check the extent of the damage to the screen. It could be that the backlight has broken, but some or all of the screen pixels may still be intact. Try shining a light on the screen to see whether you can make out a faint image of the Windows desktop on the black screen. If you can, you may be able to see enough to be able to enable the external display using the Windows Mobility Center. Search for it from the Start menu (or press Windows, X), then look for External Display. Different laptops use different keys for enabling an external monitor. You haven't told us the model of laptop you're using, so you'll need to look up the specific key combination for your model to ensure you're pressing the right keys. If you simply can't get the HDMI port to work (perhaps it was also damaged in the fall), the best way to remove the data from your hard drive is to take it out of the laptop and place it in a USB enclosure or drive caddy that you can connect to another PC.

You can then replace the hard drive in the broken laptop for insurance purposes. If you're expecting an identical laptop as a replacement, consider making an image backup of your existing hard drive using a tool such as Acronis True Image. You could then restore this image on to your new laptop. If you do this, be sure to take an image backup of the new laptop before you start, in case your saved image backup proves incompatible with the new PC. See all How to articles. Get free tech support in the Helproom Forum. Visit Windows 7 Advisor for more Windows advice. Or email our Helproom Editor for bespoke advice. Although they are designed to resist the rigors of daily use, the screens on our favorite mobile devices are actually very fragile.Most laptop and netbook Liquid Crystal Displays (LCDs) are less than ¼ inch thick. (Touch sensitive screens of mobile devices are even thinner.) If twisted, poked hard, or if just enough pressure is applied to the back of the LCD assembly, the screen on any of these devices will crack.

None of us are perfect. What can you do to recover when the inevitable happens? If you look at the screen, you might see/feel physical cracks in the tempered glass. Imagine stepping on a frozen puddle in the wintertime and seeing the ice crack under your foot. If you were to run your finger over the cracks, you may feel sharp edges or flakes of glass. Unless you like glass slivers embedded in your flesh, you might want to avoid running your hand across a screen you think is cracked. You may or may not be able to see anything on the damaged screen when it is powered on. This usually occurs when the device is dropped or the screen is flexed past its breaking point. It can also occur if something is banged against the screen, or if you shut something hard in between the screen and the keyboard. Sometimes the glass won’t break, but your screen will appear to have a large splortch (it’s a technical term, look it up) of blackness with trails of black that radiate outward like tentacles from the blob.

This type of damage is caused by pressure being applied either to the screen itself or to the back of the unit. This damage is common when a device is stepped on or sat upon. The glass doesn’t break, but the chemical inside that renders the image is leaking.At a basic level, your device screen is like those glowsticks you get at Halloween. Inside the plastic tubing is a thin glass container with a chemical. If you apply enough pressure, the container will shatter and the chemical inside comes out. The same principle applies to your LCD screen. Protect your device when carrying it by putting it in a sleeve, padded bag, or a hard plastic case. This will protect your phone when it falls out of your shirt pocket (and your laptop when you toss it in your car). Avoid putting larger, heavier objects in places where they can fall or somehow end up on top of your device. Screen damage caused by heavy objects is why it’s never a good idea to put your phone in your back pocket, or toss your laptop bag in the trunk and put suitcases on top of it.

If you are traveling with your device, carry it on the plane with you to avoid it being smashed or damaged in your luggage. Don’t leave your laptop or phone on the bed with you when you sleep. And never place it on the floor. If you do, when it falls off the bed (and it will), or if you step on it when you wake up, you’re likely to damage the screen. Try not to lift laptops or netbooks by the corner of the screen. Always pick them up by the bottom of the device. Be careful with liquids around mobile devices. Spills can damage the screen. No matter how well you care for your product or how careful you are, accidents will happen. The best way to protect yourself against accidental damage and cracked screens on all mobile devices is to purchase a repair or replacement plan that covers accidental damage when you buy the device. Agent Tanya B. joined Geek Squad in 2009. website, Tanya is either at the gym, walking her dog, or gaming. Having moved to corporate from Florida, she's trying really hard to not complain about the cold too much.