How to Speed Up a Slow Windows 10 or 11 PC (Without Buying Anything)

Start with the biggest win: startup programs

Most slow PCs are slow because a dozen programs launch themselves every time you turn the computer on. Press Ctrl + Shift + Esc to open Task Manager, click "Startup apps", and look at the list. Anything you do not need the moment the computer starts — music apps, game launchers, printer utilities, updaters — can be disabled. Right-click and choose Disable. This does not uninstall anything; the apps still work when you open them yourself.

Keep security software enabled. If you are unsure what an entry is, search its name online before disabling it.

Let Windows clean its own storage

Open Settings, then System, then Storage, and turn on Storage Sense. Then click "Temporary files" and let Windows remove old update leftovers, temporary internet files and the Recycle Bin. On a computer that has never been cleaned, this alone can free tens of gigabytes — and a nearly-full drive is one of the most common causes of slowness. Aim to keep at least 15–20% of the drive free.

Uninstall what you never use

Go to Settings, Apps, Installed apps, and sort by size. Remove programs you genuinely do not use — old games, trial software, duplicate utilities. Be cautious with entries you do not recognize; search the name first, and leave anything published by Microsoft or your computer's manufacturer unless you know it is safe to remove.

Check for stuck updates

Half-finished Windows updates cause slowdowns, fan noise and strange errors. Open Settings, Windows Update, and install anything pending, then restart — even if Windows says a restart is merely "required" rather than urgent. If an update has failed repeatedly, that is worth fixing properly rather than ignoring.

Scan for unwanted software

Slowdowns that arrived suddenly — especially with new pop-ups, a changed search engine or a browser that behaves oddly — often mean an unwanted program snuck in alongside a free download. Run a full scan with Windows Security (built in, free) and remove what it finds. Be skeptical of "PC optimizer" programs that advertise with alarming warnings; they are frequently the problem, not the solution.

Trim visual effects on older machines

On older PCs, animations cost real performance. Search for "performance" in the Start menu, choose "Adjust the appearance and performance of Windows", and select "Adjust for best performance" — or keep just "Smooth edges of screen fonts" for readability. The look gets plainer; the speed gain is immediate.

Restart properly, and more often

With "Fast Startup" enabled, shutting down is not a real restart. Get in the habit of choosing Restart (not Shut down) once or twice a week — a genuine restart clears memory and finishes pending maintenance.

When slowness is hardware

If your PC is still slow after all this, the honest answer may be hardware: an aging mechanical hard drive is the usual culprit, and upgrading to a solid-state drive (SSD) is the single best value upgrade for an older computer. If you would like a hand with any of these steps — or an honest opinion on whether an upgrade is worth it — Pro PC Support can help remotely. Call +1 888-406-8086 during business hours.