To start, determine what type of dynamic RAM is supported by the motherboard of your laptop. It can be read in the technical documentation that came with your computer. Find out what memory you need for notebook - DDR SDRAM, DDR2 SDRAM or DDR3 SDRAM.
If you have not found the documentation and found no marking on the Board is RAM that is already in the laptop, determine the type of RAM is possible by installing to a computer diagnostic program (such as Everest or Aida).
For the performance of the RAM is in its working frequency. After you have determined the proper type of RAM, determine the required operating frequency, which is suitable to the laptop. If you put extra memory card, leaving the laptop in the first place, make sure that the working frequency of both slots match. It is necessary for a stable collaboration between the two RAM. Frequency must not exceed the maximum supported by your motherboard.
To install the purchased cost of RAM, unplug the laptop from the mains, remove the battery and look on the back of the housing cover that encloses the compartment of memory. Usually, this cover is specially marked with the marking for easy adding of components, and it is easy to remove by removing the screws with a screwdriver. Insert in the free slot a new memory card and snap fastening. To get the card, fold mount and pull the card.
After installation, return the cover into place, tighten the screw, insert the laptop battery and connect it to the network to check whether the installed new RAM.