If you are replacing the lcd display in your laptop, you need to first determine the lcd display that is currently installed. Installing a different lcd display that does not match what is currently installed will likely damage your laptop's motherboard.
The below example is just a generalization of how to identify your lcd display as most laptops are assembled in a similar manner. Your make and model laptop may vary slightly. Note: A dim display does not necessarily reflect a faulty lcd.
1. Remove the rubber (or sometimes plastic) screw covers from the front bezel of the LCD display housing. A small blade or knife would be preferred.
2. Remove the screws which will number from two to six depending on manufacturer. Once the bottom screws are removed, try not to fold the cover open or closed as the stiffness of the LCD housing has now been weakened.
3. Once the screws have been removed, gently unclip the front plastic bezel using your hands in a clockwise or counter clockwise manner, starting from the lower left, (a), (b), (c), (d), (e), (f) and (g). If you find starting from another section is easier that is fine as long as you continue in a clockwise or counter clockwise manner. The plastic bezel will usually snap off fairly easily. If it does not, work the plastic in different directions until it unsnaps or look closely for overlooked screw covers.
 
4. Once the bezel has been removed, slowly pull the lcd display away from the back lid. Disconnect the (a) LCD data cable from the lcd display and the (b) bulb cable from the inverter. Also, remove the screws holding side hinge rails to the lcd display. Usually the side hinge rails have two screws on either side mounting it to the lcd display. The hinge rails would be part of the lcd hinges for the laptop.
5. Identify markings for the make and model of the LCD Display, here,
LG Electronics LP 141x2. Other common manufacturers include Acer, AU Optronics, Chi Mei, Chunghwa, Hannstar, Hitachi, IBM, IDTech, Matsushita, Mitsubishi, NEC, Quanta, Samsung, Sharp, Sanyo, Torisan, Toshiba, Toshiba, Matsushita, or Unipac.
Note: Common symptoms of a faulty lcd display include crack(s), blotches, vertical or horizontal lines.
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