Clean up hard disk space
Delete old programs and files you don’t need or compress some of your files (especially large ones), if you have less than 15% free space your computer, it could start slowing down. Note that if your computer is running slowly and storage isn’t full, your operating system may be having problems.
 Prevent programs from automatically running when you start up your computer
This is one of the main reasons computers can run slowly. Many computers automatically run programs in the background which uses your computer’s RAM, slowing it down. While some programs, such as Anti-Virus and firewall software, should be allowed to run automatically, you can close others (such as Teams) until you need them.
 Save old files to the cloud
This frees up a lot of space, which will speed up your computer. Keeping them in the cloud is a safer and more secure way to store the files you don’t want to lose, than on an external hard drive (HDD)
 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.
 Make sure you have Anti-Virus and Anti-Malware installed
Your computer will be able to run faster if it’s not spending time trying to manage bugs and viruses. In some industries, in accordance to the Finance Conduct Authority (FCA), it is a requirement to have this protection.