1. Check how much storage space you have

One of the first things to check when a laptop becomes slow is the amount of free space remaining on the main drive.

Windows needs working space for temporary files, updates, applications and other background processes. If your system drive is extremely close to being full, performance and normal operation can become more difficult.

How to check your storage

1. Open Settings.
2. Select System.
3. Select Storage.
4. Look at the available space on your main drive.

2. Check programs starting with Windows

Another common reason a laptop feels slow is that too many applications launch automatically when Windows starts.

You may have installed an application months ago and forgotten about it, while it continues to launch every time you switch on the computer.

How to check startup applications

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Select Startup apps.
3. Review the applications listed.
4. Look at their startup impact where available.

If there are applications you recognise but do not need to start automatically, you may be able to disable them from startup.

This does not uninstall the application. It simply prevents it from launching automatically with Windows.

3. Check CPU and memory usage

If your laptop suddenly becomes slow, Task Manager can help identify whether a particular process is consuming a large amount of system resources.

Press Ctrl + Shift + Esc and look at the Processes tab. Pay attention to CPU, Memory and Disk usage.

If one application is consistently consuming a very large amount of resources, it may be contributing to the problem.

However, don’t assume that the process using the most resources is automatically the cause. Some Windows processes legitimately use more resources while updates, searches or other background tasks are running.

A useful test

Close applications you are not using and wait a few minutes. Then check Task Manager again. If the laptop becomes responsive, you may have identified a software or workload-related issue.

4. Check your browser and open applications

Modern web browsers can consume significant memory when you have many tabs, extensions and web applications open.

If your laptop becomes slow mainly when you have dozens of browser tabs open, try closing unused tabs and browser windows.

You should also look at browser extensions. Some extensions run continuously and may affect performance.

Try this simple test

1. Close unused browser tabs.
2. Close applications you are not currently using.
3. Restart the browser.
4. Restart Windows if the laptop has been running for a long time.
5. Test the laptop again.

If performance improves significantly, the problem may be related to the amount of software and browser activity running at the same time rather than a failing laptop.

5. Check Windows and application updates

Keeping Windows and your applications updated is important for security, compatibility and reliability.

If your laptop has pending updates, allow them to complete and then restart the computer. Performance may temporarily change while Windows performs maintenance or updates.

Check Windows Update

1. Open Settings.
2. Select Windows Update.
3. Check whether updates are available.
4. Install appropriate updates.
5. Restart the computer if requested.

Also check whether a particular application is outdated if the slowdown happens only when using that application.

6. Check for overheating

Heat can affect how a laptop operates. If your laptop becomes very hot, its fans are constantly running loudly, or performance drops after you have been using it for a while, overheating is worth investigating.

Dust, restricted airflow, blocked vents or a cooling system that needs attention can all contribute to thermal problems.

Look for these warning signs

• The fan is running loudly for long periods.
• The laptop becomes unusually hot.
• Performance is acceptable when first started but becomes worse later.
• The laptop unexpectedly shuts down or restarts.
• Air vents are blocked or visibly dusty.

7. Check for viruses and malware

Malware is another possible reason a computer suddenly becomes slow.

A slowdown alone does not prove that your laptop has a virus. However, unusual pop-ups, browser redirects, unexpected applications, security warnings, unknown processes or major changes in behaviour can justify a security check.

Other signs worth investigating

• Unexpected browser pop-ups.
• Searches being redirected.
• Applications appearing that you did not install.
• Security software reporting threats.
• Unusual browser extensions.
• Sudden changes in computer behaviour.

Start with your installed security tools and Windows security features. If you suspect that the computer has been compromised, avoid entering sensitive information until the situation has been assessed.

8. Find out whether your laptop uses an HDD or SSD

The type of storage inside your laptop can make a major difference to how responsive the computer feels.

Older laptops may use a traditional mechanical hard disk drive (HDD), while many newer computers use solid-state storage (SSD).

If your laptop is several years old and still uses an HDD, storage technology may be one of the areas worth investigating when the computer feels slow.

Before upgrading

Do not assume that buying an SSD automatically solves every slow-laptop problem. The processor, RAM, battery condition, operating system, software and overall condition of the laptop also matter.

A sensible upgrade should be based on the actual bottleneck rather than simply replacing a component because it is available.

9. Consider whether you have enough RAM

RAM is the working memory used by Windows and applications while the computer is running. If you regularly run demanding applications or many programs at once, limited RAM can contribute to a sluggish experience.

You can check memory usage through Task Manager.

If memory usage remains very high during normal workloads, it may be worth investigating whether the laptop supports a RAM upgrade.

10. Consider the age and overall condition of the laptop

Sometimes a laptop is slow simply because the hardware is no longer well suited to the workload you are asking it to perform.

Before replacing it, however, consider whether a relatively small intervention could restore useful performance.

Questions worth asking

• Does the laptop still meet your everyday needs?
• Does it have an HDD that could potentially be upgraded?
• Is the RAM sufficient for your workload?
• Is the battery still usable?
• Is the laptop overheating?
• Is the operating system supported and appropriately maintained?
• Are there signs of hardware failure?
• Would the cost of repair be reasonable compared with replacement?

A proper assessment can help you avoid spending money unnecessarily.

Slow laptop? Use the symptoms to narrow down the problem

When should you stop troubleshooting it yourself?

Basic checks are useful, but there is a point where continued trial and error can make things worse.

Consider getting professional help if:

• The laptop is repeatedly crashing or restarting.
• You hear unusual noises from the storage drive.
• The computer becomes extremely hot.
• You suspect malware or unauthorised access.
• You cannot identify what is consuming system resources.
• You need important files recovered.
• You are considering a hardware upgrade but don’t know what is compatible.
• The laptop is too slow to use normally despite basic troubleshooting.

In particular, be careful when troubleshooting a computer that contains important documents, photographs or business information. Before attempting major repairs, make sure important data is backed up where possible.

Should you repair or replace a slow laptop?

There is no single answer.

If the laptop has a straightforward performance problem and otherwise meets your needs, repairing or upgrading it may make sense.

If it has several hardware problems, is incompatible with the software you need, or would require expensive repairs, replacement may be the more sensible option.

The important point is to diagnose the problem before spending money.

You may not need a new computer at all.

Related computer help from Gekel Edge

If your laptop is slow because of another underlying problem, you may also find our computer repair and IT support services useful.

If you are looking for help rather than attempting the repair yourself, you can also request a remote diagnosis and we’ll help determine the next step.

Frequently asked questions