Computer Running Slow? Try These Fixes First

1. Restart the Computer

If the computer has been running for days or weeks, a full restart is the simplest place to begin.

Restarting clears temporary processes, releases memory, finishes some updates, and can fix background problems that build up over time.

Use Restart, not just Shut Down and immediately power it back on. On some systems, those two actions do not behave exactly the same way.

2. Check How Much Storage Is Free

A computer with very little free storage can become noticeably slower.

Look at the main system drive and see how much space remains. If the drive is almost full, start by removing files you no longer need, uninstalling unused applications, and emptying the Trash or Recycle Bin.

3. Close Apps You Are Not Using

Every open application uses some combination of memory, processor time, and storage activity.

If you have dozens of browser tabs, several large programs, cloud-sync tools, video calls, and other applications open at the same time, the computer may simply be overloaded.

Close anything you are not actively using and see whether performance improves.

4. Check Task Manager or Activity Monitor

This is one of the quickest ways to find out what is actually slowing the computer down.

On Windows

Press Ctrl + Shift + Esc to open Task Manager.

Look at the CPU, Memory, Disk, and Network columns. Click a column heading to sort by usage and see whether one application is consuming an unusually large amount of resources.

On Mac

Open Activity Monitor from Applications > Utilities.

Check the CPU and Memory tabs to see which applications or processes are using the most resources.

5. Reduce Startup Programs

Some programs automatically launch every time the computer starts, whether you need them or not.

Too many startup applications can make boot time much slower and leave unnecessary programs running in the background all day.

Disable programs you recognize and do not need immediately at startup. Avoid disabling security software or system components unless you know what they do.

6. Install Operating System Updates

Updates can include performance improvements, bug fixes, security patches, and driver fixes.

Check Windows Update or macOS Software Update and install important pending updates. Restart afterward if prompted.

7. Update Your Browser

If the computer only feels slow while browsing the web, the browser may be the real problem.

Update the browser, close unnecessary tabs, and temporarily disable extensions you do not recognize or no longer use.

Browser extensions can run constantly in the background and sometimes cause significant slowdowns.

8. Check for Malware or Unwanted Software

Malware, adware, browser hijackers, and unwanted background programs can make a computer slow or unstable.

Run a scan using the computer’s built-in security tools or a reputable security product you already trust.

9. Check Whether the Computer Is Overheating

Computers may slow themselves down when they get too hot.

If the fans are constantly running at high speed, the computer feels unusually hot, or performance becomes worse after it has been running for a while, overheating may be involved.

Make sure air vents are not blocked and avoid using a laptop on blankets, cushions, or other surfaces that can block airflow.

10. Check the Age and Type of Storage Drive

Older computers that still use a traditional mechanical hard drive can feel dramatically slower than systems using a solid-state drive, or SSD.

If an otherwise usable computer has enough memory but still feels painfully slow when opening programs or starting Windows, replacing an old hard drive with an SSD can make a major difference.

Whether that upgrade makes sense depends on the age and condition of the computer.

11. Check How Much Memory You Have

Memory, also called RAM, affects how many applications and browser tabs the computer can comfortably handle at once.

If memory usage stays close to 100% during normal use, the computer may not have enough RAM for the way you are using it.

12. When Is It Time for a New Computer?

Slow performance does not automatically mean the computer needs to be replaced.

Replacement starts making more sense when several things are true at the same time:

• The computer cannot run a supported operating system.
• The battery, storage, keyboard, screen, or other hardware also needs repair.
• It has too little memory for modern applications.
• Repairs or upgrades would cost a large percentage of a replacement computer.
• Your normal work is still painfully slow after basic troubleshooting.

Still Running Slow?

The next step is to identify exactly where the slowdown happens.

• Slow only when starting up?
• Slow only on the internet?
• Slow only in one application?
• Slow after running for a while?
• Slow all the time?

That detail usually tells you whether to focus on startup software, networking, one application, overheating, storage, memory, or the computer itself.