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Got a computer slowing down? Here’s what to do

A computer that’s beginning to show signs of slowing down can easily creep up on you.

To help you out, here are a few possible causes if you’re currently sitting there and thinking, perhaps out loud, “what is slowing down my computer?”.

Lack of hard drive space 

Most computers need between 10 - 20 GB of free disk space to operate at their best, particularly for PCs with conventional mechanical hard drives. For more modern SSD drives, things are a little different; ideally you should leave about 25% of the disk free to help things run smoothly depending on the SSD. If you’re currently falling short of the space you need and your computer’s slowing down, this could be the reason why. 

Defragment your hard drive

Computers can start dividing and scattering program and system files to available sections of free space on your hard disk, particularly if it’s a mechanical one, and it’s getting full. Known as fragmentation - this can slow down your computer too, especially when you need to open a program or file. Defragmenting your hard disk or searching your computer for files or apps to remove to free up space doesn’t necessarily need to be complicated. We’ve got some smart, handy solutions for both.

Auto-launching startup programs 

PCs are great multitaskers but, like an aggravated parent, they can struggle when committed to too many things at once. This can happen behind the scenes if you’ve accumulated lots of unused programs of apps that automatically launch with system startup, thereby slowing the whole thing down. While this is annoying, Windows gives you a way to disable these unwanted processes, but we think we have made doing this even easier. If your computer’s slowing down, why not give our award-winning CCleaner app a try today?


  • How do I fix a slow startup on my computer?

    There are a number of hardware and software-related factors that can slow down your computer. However, if it’s particularly slow during startup, this could mean you have too many apps and programs clogging up this specific process.

  • How can I make my computer boot up faster?

    Computer boot times can vary depending on your hardware, how old your computer is and how often you use it. A common problem can be a collection of startup apps slowing down your PC’s startup procedure. The good news is that downloading and using CCleaner can fix this issue.

  • How do I make Windows 10 boot up faster?

    While Windows 10 is great, it can still experience problems with slow startup. Full hard drives, needless startup programs, Windows Registry and your power settings can all have an impact and more. CCleaner can help you understand what these are and how to improve things.