A sluggish computer is one of the most common — and most fixable — tech frustrations. Before you assume you need a new machine, work through this checklist. Most slowdowns come from a handful of causes, and many take just a few minutes to fix.
First, restart it
It sounds too simple, but a full restart clears memory, closes runaway background processes, and applies pending updates. Many computers that "feel broken" just haven't been restarted in weeks. Shut down fully (not just sleep) and power back on before anything else.
1. Close what you're not using
Too many open browser tabs and background apps eat memory and slow everything down.
- Close tabs you don't need — each one uses resources.
- Quit apps running in the background that you're not using.
- On Windows, open Task Manager (Ctrl+Shift+Esc) and look at the Processes tab to see what's hogging CPU and memory. On a Mac, use Activity Monitor.
2. Trim your startup programs
Many programs quietly launch themselves every time you boot, so your computer is slow from the moment it turns on.
- Windows: Task Manager → Startup apps tab → disable anything you don't need at boot.
- Mac: System Settings → General → Login Items → remove unnecessary apps.
Be conservative — leave security software and drivers alone — but disable things like chat apps and updaters you don't need instantly.
3. Free up disk space
A nearly full drive slows a computer noticeably. Aim to keep at least 10–15% free.
- Empty the Recycle Bin / Trash.
- Uninstall programs you no longer use.
- Use built-in cleanup tools: Storage Sense on Windows or Storage recommendations on Mac.
- Move large files (photos, videos) to an external drive or the cloud.
4. Check for malware
Sudden slowness — especially with pop-ups, strange toolbars, or an overheating fan — can mean malware. Run a full scan with your endpoint protection or Windows Security. If something feels off, don't ignore it.
5. Install updates
Outdated operating systems and drivers can run poorly and insecurely. Make sure Windows or macOS is current — ideally with automatic updates turned on. Update your web browser too, since that's where most of us spend the day.
6. Restart your browser habits
If the computer is fine but the web is slow, the browser is often the culprit:
- Keep tab counts reasonable.
- Remove extensions you don't use — some are resource-heavy or even malicious.
- Clear the cache occasionally.
When it's the hardware
If you've done all of the above and it's still crawling, the machine may simply be under-resourced. The two upgrades with the biggest impact:
- Swap a hard drive for an SSD. This is the single biggest speed boost for an older computer — often the difference between "unusable" and "like new." See SSD vs. HDD.
- Add more memory (RAM). If you routinely run many apps or dozens of tabs, more RAM helps a lot.
These upgrades are far cheaper than a new computer and can add years of life. If the machine is very old, though, replacement may be the better value — our guide on desktop vs. laptop for business can help you choose.
A note for businesses
If several computers in your office are slow, the problem may not be the machines at all — it could be your network, Wi-Fi, or internet connection. Slow-for-everyone usually points somewhere shared.
How Gecadi can help
If your computers are dragging and you'd rather not troubleshoot them yourself, we're happy to help — from a quick tune-up to SSD and memory upgrades, or advice on when it's smarter to replace than repair. Gecadi serves clients on-site across Los Angeles and Orange County and remotely across the U.S., 24/7. Reach out and we'll get your machines moving again.