A slow computer is one of the most frustrating technology problems at home. Pages take forever to load, programmes freeze, and simple tasks that should take seconds drag on for minutes. The good news is that in many cases, you can significantly improve your computer's speed without spending anything at all.
Here are the most effective steps to try, in order.
1. Restart your computer properly
Many people leave their computers in sleep or hibernate mode for days or weeks at a time. A proper restart — through the Start menu, not just closing the lid — clears the memory and can immediately improve performance. Try this first before anything else.
2. Check what's running in the background
Open Task Manager (press Ctrl + Shift + Esc) and click the Processes tab. Sort by CPU or Memory to see what's using the most resources. If you spot programmes you don't recognise or don't need, you may be able to close or uninstall them.
3. Disable unnecessary startup programmes
Many programmes set themselves to launch automatically when Windows starts, slowing down your boot time. In Task Manager, click the Startup tab to see a list of everything that launches at startup. Right-click anything you don't need immediately and select Disable.
4. Free up disk space
Windows slows down significantly when your hard drive is nearly full. Open File Explorer, right-click your C: drive and select Properties, then click Disk Cleanup. This safely removes temporary files, old downloads and other clutter. Aim to keep at least 10–15% of your drive free.
5. Check for and install Windows updates
Go to Settings → Windows Update and check for any outstanding updates. Keeping Windows up to date improves security and can also fix performance issues caused by bugs in older versions.
6. Check your antivirus isn't the problem
Some antivirus programmes are resource-heavy and can slow computers down significantly, especially older machines. If your antivirus is running a full scan, performance will suffer temporarily. Schedule scans for overnight or times when you're not using the computer.
Still slow after trying all of this?
If your computer is still sluggish after working through these steps, the cause may be something deeper — failing hardware, software conflicts, or a device that's simply reached the end of its useful life.
I offer a Slow Computer Speed-Up service — a remote session where I diagnose what's causing the slowdown and carry out a thorough clean-up. Or if you'd prefer ongoing support, the Bytova Home Support Plan gives you access to friendly IT help whenever you need it.