How to fix slow laptop depends on the operating system and what is actually causing the slowdown, but many fixes apply across both Windows and Mac. The quick fixes below cover the most common causes first. The sections after that go deeper into OS-specific solutions.
Quick Fixes to Try First
Start here before anything else. These four steps take under five minutes and resolve the majority of temporary slowdowns.
- Restart the laptop
A full restart clears RAM, ends background processes that have accumulated, and applies any pending updates.
- Close unused apps and browser tabs
Every open tab and application uses RAM and processor resources. Closing everything not currently in use frees those resources for what is actually being worked on.
- Check Task Manager for resource-hogging processes
On Windows, press Ctrl+Shift+Esc to open Task Manager and click the CPU and Memory columns to sort by usage. On Mac, open Activity Monitor from Applications, Utilities.
- Check available storage space
A drive that is more than 90 percent full slows the operating system significantly, since it needs free space to create temporary files and manage virtual memory.
Why Is My Laptop Running So Slow?
A slow laptop is usually caused by software, storage, memory, or hardware issues. Over time, background processes, outdated software, and limited system resources can reduce performance and make everyday tasks feel sluggish.
Some of the most common causes include:
- Too many startup programs that launch automatically when the laptop turns on
- Low available storage space, which can affect system performance
- Too many browser tabs or applications running simultaneously
- Outdated operating system or drivers
- Malware or unwanted background software
- Insufficient RAM for current workloads
- Aging hardware, especially older hard drives that struggle with modern applications
Identifying the cause is the first step toward improving performance. The troubleshooting methods below can help determine whether the slowdown is related to software, storage, memory, or hardware limitations.
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How to Fix Slow Laptop on Windows
Windows offers several built-in tools that address the most common causes of slowdown. Working through these in order covers most situations.
Disable Unnecessary Startup Programs
Too many startup apps can slow down boot times and reduce overall performance.
- Press Ctrl + Shift + Esc to open Task Manager.
- Select the Startup tab.
- Disable programs you don’t need launching automatically.
Focus on apps such as messaging software, cloud storage clients, and other background utilities.
Run Disk Cleanup and Free Up Storage Space
Low storage space can cause Windows to run more slowly. So, how to fix laptop running very slow?
- Search for Disk Cleanup from the Start menu.
- Select the system drive (usually C:).
- Remove temporary files and unnecessary system files.
- Empty the Recycle Bin and delete unwanted downloads.
For best performance, try to keep at least 10–20% of your storage free.
Adjust Power Plan to High Performance
Power settings can affect laptop performance.
- Open Control Panel > Power Options.
- Select Balanced or High Performance.
- Avoid Power Saver mode when performance is a priority.
This can improve responsiveness, especially on older laptops.
Update Windows and Drivers
Outdated software can cause compatibility and performance issues.
- Go to Settings > Windows Update.
- Install any available updates.
- Check your laptop manufacturer’s website for the latest drivers.
Pay particular attention to graphics, chipset, and storage drivers.
Scan for Malware
Malware can consume system resources and significantly slow down a laptop.
- Open Windows Security.
- Select Virus & Threat Protection.
- Run a Full Scan.
If malware is detected, follow the recommended removal steps before restarting the computer. Microsoft’s guidance on Windows Security explains how to run a scheduled full scan to catch threats that a quick scan may miss.
How to Fix Slow Laptop on Mac
Mac slowdowns have their own specific causes and fixes, most of which are accessible without third-party tools.
Clear Storage and Remove Unused Apps
Low storage space can affect overall system performance and responsiveness.
- Open Apple Menu > About This Mac > Storage > Manage.
- Review storage recommendations and remove unnecessary files.
- Delete applications you no longer use from the Applications folder.
- Empty the Trash to free additional space.
For best performance, try to keep at least 10–15% of your storage available.
Disable Login Items and Background Apps
Too many apps launching at startup can slow down boot times and consume system resources.
- Open System Settings > General > Login Items.
- Review the list of startup applications.
- Remove apps that do not need to launch automatically.
- Check individual app settings for background processes that continue running after the app is closed.
Reducing startup and background activity can improve both performance and battery life.
Update macOS and Applications
Keeping macOS and apps up to date helps improve stability, security, and performance.
- Go to System Settings > General > Software Update.
- Install any available macOS updates.
- Open the App Store and update installed applications.
Most updates include bug fixes, performance improvements, and security patches that can help your Mac run more smoothly.
Quick Tip: If your Mac still feels slow after these steps, open Activity Monitor and check for apps using unusually high amounts of CPU, memory, or disk resources. Closing or updating those apps can often restore performance quickly.
When to Consider Getting a New Laptop
Sometimes a slow laptop is caused by aging hardware rather than software issues. If performance remains poor after trying the fixes how to fix a slow laptop above, it may be time to consider an upgrade or replacement.
Signs Your Laptop Is Too Old to Fix
You may want to replace your laptop if:
- It cannot run the latest version of its operating system.
- Apps remain slow even after software optimization.
- The system frequently freezes during basic tasks.
- Startup times are excessively long.
- The laptop is more than 7–8 years old.
- Hardware replacement parts are difficult or expensive to find.
These signs often indicate that hardware limitations, rather than software problems, are causing the slowdown.
Hardware Upgrade vs. Replacement
Before buying a new laptop, consider whether a hardware upgrade is possible.
- Upgrade RAM if your laptop struggles with multitasking.
- Replace an HDD with an SSD for significantly faster boot and load times.
- Replace the laptop if upgrades are not supported or the device remains slow after hardware improvements.
For many older Windows laptops, adding RAM or installing an SSD can provide a noticeable performance boost at a much lower cost than purchasing a new device.
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FAQs
How Do I Know What Is Slowing Down My Laptop?
Check Task Manager on Windows or Activity Monitor on Mac. Sort processes by CPU or memory usage to identify which apps are using the most resources. High resource usage often reveals the cause of a slow laptop.
Can Too Many Browser Extensions Slow Down a Laptop?
Yes, too many browser extensions can slow down a laptop. Extensions run in the background and consume memory and processing power. Removing unused extensions can improve browser speed and overall system performance.
How Much Free Storage Should a Laptop Have to Run Properly?
A laptop should have at least 10–15% of its storage space free for optimal performance. When storage becomes too full, the operating system may struggle with temporary files and virtual memory, leading to slower performance.
How Do I Make My Laptop Run Faster?
To make your laptop run faster, restart it, disable unnecessary startup programs, free up storage space, and install updates. If the laptop is older, upgrading to an SSD can provide one of the biggest performance improvements.
Bottom Lines
If you’re wondering how to fix slow laptop, start with the simplest solutions first. Cleaning up storage, reducing background processes, installing updates, and checking for malware can often restore performance without spending money.
For older devices, hardware upgrades such as additional RAM or an SSD can extend the laptop’s lifespan and improve speed dramatically. If the laptop still struggles after both software and hardware improvements, it may be time to consider a replacement.
