A computer that drags, takes two minutes to boot, or freezes at every click is one of the most common frustrations out there. Before you consider buying a new one, know that you can often speed up a slow PC in a few simple steps. Here are 10 fixes, ranked from easiest to most technical, all safe for your files.

Quick answer: To speed up a slow PC, start by restarting the computer, disabling startup programs (Task Manager > Startup), freeing up disk space, and installing Windows updates. If it’s still sluggish, adding an SSD and more memory (RAM) delivers the biggest gain.

1. Restart your computer

It sounds obvious, but a PC left in sleep mode for days piles up processes in memory. A real restart (Start > Power > Restart) clears the memory and fixes a good chunk of temporary slowdowns.

2. Disable startup programs

Plenty of software launches automatically with Windows and slows down startup. To speed up a slow PC, open Task Manager (Ctrl + Shift + Esc), go to the Startup tab, and turn off anything you don’t need running at launch (drivers, update tools, chat apps).

3. Free up disk space

A nearly full drive slows everything down. Go to Settings > System > Storage, turn on Storage Sense, and clear out temporary files. Uninstall any apps you no longer use while you’re at it.

4. Install Windows updates

Updates fix bugs and improve both performance and security. Check Settings > Windows Update to make sure everything’s current, drivers included.

5. Scan for malware

A PC that suddenly slows down may be infected. Run a full scan with Windows Security (the built-in antivirus) or your security software. Malicious programs often eat up resources in the background.

6. Cut back on visual effects

Animations look nice but cost resources. Type “Adjust the appearance and performance of Windows” into search, then choose Adjust for best performance, or just turn off the animations.

7. Clean up your browser

A browser with too many tabs and extensions gets hungry fast. Close unused tabs, remove extensions you don’t need, and clear the cache. This is often the real cause of a “slow PC,” when it’s actually just the browser.

8. Check background apps

In Task Manager, under the Processes tab, sort by CPU or memory usage. You’ll see which app is eating the most resources and can close or uninstall it.

9. Add an SSD (the biggest gain)

If your computer still runs on an old mechanical hard drive, swapping it for an SSD transforms the machine: boot times drop to seconds, apps open instantly. It’s the most cost-effective way to speed up a slow PC that’s a few years old.

10. Add more memory (RAM)

If you tend to keep lots of tabs and apps open at once, adding RAM cuts down on slowdowns. This makes a big difference on computers with only 4 or 8 GB.

When should you ask for help?

If your computer is still slow after all these steps, you might be dealing with a failing drive, overheating, or a system that needs reinstalling. A technician can run a quick diagnosis and save you from an unnecessary purchase.

Frequently asked questions

Why did my PC suddenly get slow?

A sudden slowdown often comes from an update running in the background, a full disk, malware, or an app crashing behind the scenes. Task Manager helps you spot the culprit.