After a while, even the most basic activities on your computer may become sluggish. There are several causes for this, including the heavy (and ever-increasing) number of files slowing down the system, as well as bugs in your operating system. Some of these variables can be reduced or avoided, whereas others are simply part of a computer's life cycle.
However, a computer can be considered "fast" when processing data. In many cases, it's CPU speed that makes the difference in overall performance. That being said, you may have a computer with a bad CPU but excellent memory and other qualities that will compensate for its weakness. In any case, the following sections explain how to measure your CPU speed and what factors affect it.
There are some quicksave for your time and which could help make your PC or Laptop faster. 

Prevent programs from automatically running when you start up your computer.

This is one of the main causes of computer slowness. Many computers automatically start applications in the background, using up memory and slowing down your machine. While some programs, such as antivirus and firewall software, should be allowed to run automatically, others (such as iTunes or Microsoft Office) should not be closed until you need them. 

Delete/uninstall programs you don’t use.

Many new computers come with pre-installed programs that take up space and run background processes automatically. Go into your control panel and uninstall the programs you don’t need, being careful to keep the ones you do need.

Uninstall unnecessary programs.

Installed programs on your computer can also bog your system down. Browse through all your current programs and uninstall anything that you haven’t used in the past six months or so. Chances are, there will be at least a few programs you don’t even remember installing.

Delete temporary files.

Temporary files are technical files that your system uses to execute processes, and as the name implies, they're only needed for a short time. They take up unnecessary disk space and slow down your computer after they've served their purpose. Depending on which Windows system you're using, there are various methods to delete temporary files, but all of them can make your device operate more quickly—especially if you haven't deleted temporary files in the past.

Changing the power plan of your desktop computer to High Performance.

Computers have different power plans that allow you to limit how much energy the computer consumes. Some settings reduce battery life by limiting performance, but High Performance improves speed and performance. Note that this will only work on a desktop since the HighPerformance option on a laptop will deplete the battery.
Hopefully, putting these methods together will improve the performance and lifespan of your PC by at least several months. You may extend the effectiveness of these improvements for months to years as long as you keep your computer free of needless files and debris.