Why that’s so is simple – almost all the junk files a Windows computer collects, it collects on the same partition of its hard drive that Windows is installed on, and the less free space there is on this partition, the slower Windows will be. Not only do junk files that have built up on a computer over a significant amount of time take up just as significant an amount of storage space, they can also lead to the affected computer running slower than it would be without them.

A few kilobytes worth of junk files could never be a bother – but over time, as more and more junk files are added to the pile of trash, these few kilobytes experience what is known as ‘the snowball effect’ and eventually turn into a mountain of junk files that weigh multiple gigabytes and take up a significant amount of storage space. As you use your computer, junk files (from files left over after system updates and files lying in your Recycle Bin to files in your internet browser’s cache and everything in between) start accumulating in different areas of its hard disk drive.

How to remove junk files in windows 10