1. Delete cookies, cache and internet history from web browsers

 Deleting or removing your cookies, cache and internet history will free some of your computer's disk space, enabling your computer to run faster.

2. Clean up unnecessary PC startup programs

Some programs have options that allow you turn off their automatic startup function. Uninstalling unnecessary startup programs will also help speed up your computer's startup time.

3. Uninstall unused software

 Uninstalling unused software from your PC can free up space for other, more useful programs, plus speed up your computer's startup time and overall performance.

4. Clean and free up your PC's disk space

Use a disk optimizer to identify and clean PC files that are no longer needed on your computer.

5. Clean your computer's registry

The system registry is a very sensitive part of your computer and should be modified with caution. The best way to clean and optimize your computer's registry for better performance is to use a trusted registry cleaner and optimizer to defrag and compact your system registry.

6. Defragment the computer

You can speed up your slow computer by defragmenting the hard drive. Defragmenting your computer's hard drive takes all of its fragmented files and places them in one central location. This results in more available disk space on your hard drive, which in turn allows your PC to perform faster.