This does not entail that there is any mechanical fault in the computer
, rather it is just that when the system was purchased, probably the users did not visualize the amount of RAM that would be required to run the applications, but when the process was actually set to operation then it was realized that it is essential to buy Computer RAM in order to make the system run efficiently. This would also ensure that the programs are performing to the optimum without any impact on the performance and the speed of the system. RAM can be easily bought from any place, but one has to ensure about the authenticity of the manufacturer in regards to the products that they are selling. After all spurious computers RAM can do more harm to the system than good therefore one should keep a watchful eye on that.