How to Fix Slow Startup Windows: 19 Easy Fixes (2026 Guide)

If you’re wondering How to fix slow startup Windows, the most effective solutions include disabling unnecessary startup programs, freeing up storage space, updating Windows and drivers, repairing corrupted system files, and checking your hard drive’s health. In many cases, these simple steps can significantly reduce boot time and improve overall performance.

This guide explains How to fix slow startup Windows with practical, step-by-step solutions for Windows 11 and Windows 10. If your PC remains slow after it finishes booting, also check out our guide on Why Is My Computer So Slow? 10 Common Causes and Proven Ways to Speed It Up for additional troubleshooting tips.

Why Does Windows Start Slowly?

Before applying any fixes, it’s helpful to understand what causes slow startup. Windows loads drivers, background services, startup programs, and security software every time your computer turns on. If too many processes run at once, startup time increases.

Some of the most common causes include:

• Too many startup applications.
• Low available storage space.
• Outdated Windows updates.
• Old or incompatible drivers.
• Corrupted system files.
• Traditional hard disk drives (HDDs).
• Malware or unwanted software.
• Hardware beginning to fail.

Once you identify the cause, learning How to fix slow startup Windows becomes much easier.

How to Fix Slow Startup Windows

Below are How to Fix Slow Startup Windows:

1. Disable Unnecessary Startup Programs in your Windows

One of the fastest ways to improve boot time is by reducing the number of programs that launch automatically when Windows starts.

Many applications add themselves to the startup list even if you rarely use them. These programs consume memory and processing power before you even begin using your computer.

How to Do It

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Select the Startup Apps tab.
3. Review every application listed.
4. Right-click programs you don’t need immediately after startup.
5. Select Disable.
6. Restart your computer.

Only disable applications you’re familiar with. Leave security software and essential Windows services enabled.

2. Restart Instead of Always Using Sleep On Your Windows

Many users leave their computers in Sleep mode for weeks without performing a full restart. While Sleep is convenient, restarting allows Windows to clear temporary memory, complete pending updates, and reload system processes correctly.

This simple habit can improve startup performance over time.

How to Do It

1. Click Start.
2. Select the Power icon.
3. Choose Restart.
4. Allow Windows to complete the restart process.

3. Install the Latest Windows Updates

Microsoft regularly releases updates that improve system stability, performance, and compatibility. Missing important updates can sometimes contribute to slow startup times.

Keeping Windows updated is another effective way to learn How to fix slow startup Windows.

How to Do It

1. Open Settings.
2. Click Windows Update.
3. Select Check for updates.
4. Install available updates.
5. Restart your PC.

Microsoft recommends installing security and feature updates to keep your system running efficiently. Learn more from the official Microsoft Windows Support website.

4. Free Up Storage Space On Your Windows

Windows requires free storage to create temporary files, install updates, and manage virtual memory. If your drive is nearly full, startup performance may suffer.

Many experts recommend keeping at least 15–20% of your primary drive free for optimal performance.

How to Do It

1. Open Settings.
2. Select System.
3. Click Storage.
4. Review storage usage.
5. Delete temporary files or uninstall programs you no longer use.
6. Empty the Recycle Bin.

5. Enable Storage Sense On Your Windows

Windows includes a built-in feature called Storage Sense that automatically removes unnecessary temporary files and helps maintain available storage.

This reduces manual cleanup and can contribute to smoother startup performance over time.

How to Do It

1. Open Settings.
2. Navigate to System → Storage.
3. Select Storage Sense.
4. Turn the feature on.
5. Choose how often Windows should clean temporary files automatically.

6. Update Device Drivers On Your Windows

Outdated graphics, storage, chipset, or network drivers can slow the Windows startup process or create compatibility issues after major updates.

Checking for updated drivers is another important step when learning How to fix slow startup Windows.

How to Do It

1. Right-click the Start button.
2. Select Device Manager.
3. Expand the hardware category.
4. Right-click the device.
5. Select Update driver.
6. Choose Search automatically for drivers.

You can also download the latest drivers directly from your computer or hardware manufacturer’s official support website for the most recent versions.

7. Scan for Malware On Your Windows

Some unwanted software runs automatically during startup, consuming system resources before Windows finishes loading. Running a security scan helps rule out malware as the cause of slow startup.

How to Do It

1. Open Windows Security.
2. Select Virus & Threat Protection.
3. Click Quick Scan.
4. If necessary, perform a Full Scan.
5. Remove any detected threats and restart your computer.

8. Turn On Fast Startup On Your Windows

Fast Startup is a built-in Windows feature that reduces boot time by saving part of the system state before shutdown. On many computers, enabling this feature can noticeably improve startup speed.

If you’re looking for How to fix slow startup Windows, checking whether Fast Startup is enabled is a good place to start.

How to Do It

1. Open Control Panel.
2. Go to Hardware and Sound > Power Options.
3. Click Choose what the power buttons do.
4. Select Change settings that are currently unavailable.
5. Check Turn on fast startup (recommended).
6. Click Save changes.
7. Restart your computer.

Microsoft explains how Fast Startup works in its official Windows support documentation if you’d like more details.

9. Repair Corrupted System Files On Your Windows

Corrupted or missing Windows system files can increase boot time and cause startup errors. Windows includes built-in tools that automatically scan and repair many of these problems.

This is one of the most reliable methods for How to fix slow startup Windows without reinstalling the operating system.

How to Do It

1. Open the Start menu.
2. Search for Command Prompt.
3. Right-click it and select Run as administrator.
4. Type the following command:

sfc /scannow

5. Press Enter.
6. Wait for the scan to complete.
7. Restart your computer if Windows repairs any files.

10. Run Startup Repair On Your Windows

If Windows struggles to load properly every time you start your PC, Startup Repair may automatically detect and fix boot-related issues.

How to Do It

1. Open Settings.
2. Go to System > Recovery.
3. Click Advanced startup.
4. Select Restart now.
5. Choose Troubleshoot > Advanced options > Startup Repair.
6. Allow Windows to diagnose and repair startup problems.

11. Uninstall Programs You No Longer Use On Your Windows

Unused applications often install background services that start automatically with Windows. Removing software you no longer need can reduce startup time and free valuable storage space.

How to Do It

1. Open Settings.
2. Select Apps > Installed apps.
3. Sort programs by size or installation date.
4. Review applications you no longer use.
5. Click Uninstall and follow the prompts.

12. Upgrade from an HDD to an SSD On Your Windows

If your computer still uses a traditional hard disk drive (HDD), upgrading to a solid-state drive (SSD) can dramatically reduce startup time. In many cases, this is the single biggest hardware improvement you can make.

While software optimizations help, replacing an HDD with an SSD often allows Windows to boot in seconds instead of minutes.

How to Do It

1. Determine whether your computer currently uses an HDD or SSD.
2. Choose a compatible SATA or NVMe SSD.
3. Back up important files.
4. Clone your existing drive or perform a clean Windows installation.
5. Install the SSD and boot your computer.

13. Check Which Programs Affect Startup the Most On Your Windows

Task Manager provides a Startup Impact rating that shows which applications slow down Windows the most during boot.

Reviewing this information helps you decide which programs can safely be disabled.

How to Do It

1. Open Task Manager.
2. Select the Startup Apps tab.
3. Review the Startup impact column.
4. Disable applications with a high impact if they are not essential.
5. Restart your computer and compare startup performance.

14. Perform a Clean Boot On Your Windows

If your computer still starts slowly after trying the previous solutions, a third-party application or service may be causing the delay. Performing a Clean Boot starts Windows with only essential Microsoft services, making it easier to identify software conflicts.

This is one of the most effective troubleshooting methods for How to fix slow startup Windows when the exact cause isn’t obvious.

How to Do It

1. Press Windows + R.
2. Type msconfig and press Enter.
3. Select the Services tab.
4. Check Hide all Microsoft services.
5. Click Disable all.
6. Go to the Startup tab and open Task Manager.
7. Disable unnecessary startup applications.
8. Restart your computer.

15. Check Your Drive for Errors On Your Windows

Storage drives can develop file system errors over time. These errors may increase boot time, slow file access, or cause Windows to hang during startup.

Checking your drive regularly is another useful step when learning How to fix slow startup Windows.

How to Do It

1. Open File Explorer.
2. Right-click your Windows drive (usually C:).
3. Select Properties.
4. Open the Tools tab.
5. Under Error checking, click Check.
6. Follow the on-screen instructions if Windows finds any issues.

16. Optimize Your Storage Drive On Your Windows

Windows automatically optimizes storage drives, but manually checking the optimization schedule can help maintain performance.

For traditional hard drives, optimization reorganizes fragmented data. For SSDs, Windows performs maintenance tasks designed specifically for solid-state storage.

How to Do It

1. Search for Defragment and Optimize Drives.
2. Open the tool.
3. Select your system drive.
4. Click Optimize.
5. Verify that automatic optimization is enabled.

Note: Windows automatically detects SSDs and performs the appropriate optimization. You do not need to manually defragment an SSD.

17. Check Your Computer’s Health On Your Windows

If startup performance suddenly becomes much worse, failing hardware may be responsible.

Warning signs include:

• Clicking noises from a hard drive.
• Frequent blue screen errors.
• Unexpected shutdowns.
• Programs crashing during startup.
• Repeated disk repair messages.

If you notice these symptoms, back up your important files immediately before performing additional troubleshooting.

18. Keep Drivers and BIOS Updated On Your Windows

Computer manufacturers occasionally release BIOS or UEFI firmware updates that improve hardware compatibility and system stability.

Updating your BIOS should only be done when recommended by your computer manufacturer and after carefully following the official instructions.

How to Do It

1. Visit your computer manufacturer’s support website.
2. Search using your exact laptop or motherboard model.
3. Compare your current BIOS version with the latest available version.
4. Follow the official update instructions carefully.
5. Restart your computer after the update is complete.

19. Reset Windows (Last Resort) On Your Windows

If nothing else improves startup speed and software corruption is suspected, resetting Windows may resolve persistent problems while giving you a fresh operating system.

Before resetting your computer, back up important documents, photos, and other personal files.

How to Do It

1. Open Settings.
2. Select System > Recovery.
3. Click Reset this PC.
4. Choose whether to keep your personal files or remove everything.
5. Follow the setup instructions until Windows finishes reinstalling.

Common Mistakes That Make Windows Start Slowly

Many users unknowingly create startup problems by neglecting basic system maintenance. Avoiding these common mistakes can help keep your computer running smoothly.

• Installing too many unnecessary applications.
• Ignoring Windows updates.
• Keeping very little free storage space.
• Allowing dozens of apps to launch at startup.
• Using outdated device drivers.
• Never restarting the computer.
• Ignoring malware scans.
• Continuing to use a failing hard drive.

Best Practices to Maintain Fast Startup On Your Windows

After you’ve successfully learned How to fix slow startup Windows, regular maintenance helps prevent the problem from returning.

• Restart your PC regularly.
• Review startup applications every few months.
• Keep Windows updated.
• Install drivers only from trusted sources.
• Maintain sufficient free storage space.
• Run security scans periodically.
• Back up important files.
• Monitor your storage drive’s health.

When to Seek Professional Help On Your Windows

If your computer continues to start slowly after completing every step in this guide, it may be time to consult a qualified technician.

Professional assistance may be necessary if:

• Your computer won’t boot consistently.
• You hear unusual hardware noises.
• Windows repeatedly displays startup errors.
• Your storage drive reports hardware failures.
• The computer freezes before reaching the login screen.

Addressing hardware problems early may help prevent data loss and more expensive repairs later.

If you also use Apple devices, check out our guide on How to Share Location on iPhone (2026 Guide) – Easy & Secure Methods for step-by-step instructions on securely sharing your location with family and friends.

(FAQ) On How to Fix Slow Startup Windows

Why is my Windows PC taking so long to start?

The most common causes include too many startup programs, insufficient storage space, outdated drivers, pending Windows updates, corrupted system files, malware, or an aging hard drive. Identifying the underlying cause is the first step in learning How to fix slow startup Windows.

How long should Windows take to boot?

Startup time depends on your computer’s hardware. A modern PC with an SSD typically boots within 10 to 30 seconds, while older systems with a traditional hard drive may take significantly longer. If your computer consistently takes several minutes to start, it’s worth troubleshooting the issue.

Will disabling startup programs make my computer faster?

Yes. Disabling unnecessary startup applications reduces the number of programs Windows loads during boot, which can noticeably improve startup time. However, avoid disabling antivirus software or essential Windows services.

Is upgrading to an SSD worth it?

For computers that still use a traditional hard disk drive (HDD), upgrading to an SSD is one of the most effective ways to improve startup speed and overall system performance. Many users notice a significant reduction in boot time after making the upgrade.

Can malware cause slow startup?

Yes. Some malicious or unwanted programs run automatically when Windows starts, using system resources before you even reach the desktop. Running regular security scans with Windows Security or another trusted antivirus program can help detect and remove these threats.

Should I reset Windows if startup is still slow?

A system reset should usually be considered only after you’ve tried other troubleshooting methods, such as disabling startup apps, repairing system files, installing updates, and checking your storage drive. Always back up important files before resetting your computer.

How often should I check my startup applications?

It’s a good idea to review your startup applications every few months or whenever you install new software. Some programs automatically add themselves to the startup list, increasing boot time over time.

Final Thoughts On how to fix slow startup Windows

Learning How to fix slow startup Windows is about more than faster boot times—it’s about improving your PC’s overall performance. Simple steps like disabling unnecessary startup apps, installing updates, and freeing up storage can make a noticeable difference.

If your computer is still slow after trying these fixes, aging hardware may be the cause. Upgrading to an SSD or adding more memory can significantly improve startup speed and overall responsiveness.

With regular maintenance and the right upgrades, you can keep your PC running smoothly. If this guide helped you learn How to fix slow startup Windows, share your experience or additional tips in the comments to help other readers.