A computer at times might have some problems where the functionality of the computer might be affected with this when you identify the problem and fix it then you are troubleshooting the computer the problem could be in the software or the hardware, but when you are troubleshooting the computer then some influences need to be evaluated.
Check the processor and identify if it is overheating even with the modern technology installed in the computer there are those processors which still do overheat, the chips’ temperature should not be exceeded when using the computer and when the processor does overheat there is a likelihood that the computer will be slow or in other scenarios the computer might lock up so that the temperature can go back to its normal temperature. Calibrate windows for battery life to make it last longer.
In the computer, the read access memory should be in perfect condition to prevent the computer having some malfunction; therefore, you should know which read access memory is not installed in the motherboard then the computer will be slow and that the computer will be unstable.
Evaluate the condition of the hard disk since it would be among the reasons why a computer might have a problem, with the hard disk we there comes a time when they might wear out with this you will notice issues in the computer like having blue screens on the computer which you are unable to explain or at times in the affected drive you might encounter that the access is slow, when the hard disk is producing noise it is an indicator that there is a problem.
All computers do have their disk type since the computers do vary, the disk that you end up to choose will affect the performance and speed of the computer so you should carefully choose the disk and ensure that the interference you choose does not collide with the disk type you choose both of them should be compatible with each other to avoid it from getting any problems.
A lot of programs at times might be opened in the background without your knowledge this could make the computer to lag and also before a program opens up it might take long since there are many others which are still open. You need to also know how to fix closing apps in windows.
Most people tend to ignore the basic input output system setting which actually makes the computer to be slow if ignored, the settings are left as they are since most people believe they should be always that way but this is not the case.
Here is an additional read on this topic http://edition.cnn.com/books/beginnings/9909/geek.squad/index.html.