How to Fix a Computer That Takes Forever to Start Up

A computer that takes forever to start up can turn a simple task into a frustrating experience. You press the power button, wait for the screen to load, and watch the system struggle before you can even open a browser. Whether you use your computer for work, studying, gaming, or everyday activities, slow startup can waste valuable time and affect your productivity.

The good news is that a slow-starting computer does not always need expensive repairs or a complete system replacement. In many cases, you can improve boot time by changing a few settings, removing unnecessary programs, checking your storage drive, or addressing underlying software problems.

In this guide, you will learn how to identify the causes of slow startup and follow practical steps to get your computer running faster.

1. Disable Unnecessary Startup Programs

One of the most common reasons a computer takes too long to start is that too many applications launch automatically when the system turns on.

Programs such as messaging apps, cloud storage services, game launchers, and software updaters may run in the background even when you do not need them. When several applications start simultaneously, they compete for memory and processing power.

How to fix it on Windows:

1. Press Ctrl + Shift + Esc to open Task Manager.
2. Select Startup apps. On some Windows versions, this section may be called Startup.
3. Review the list of applications that launch automatically.
4. Right-click programs you rarely use and select Disable.
5. Restart your computer to see whether startup improves.

Avoid disabling essential security software, hardware utilities, or unfamiliar system components unless you know what they do.

For macOS users: Open System Settings, select General, and choose Login Items. Remove unnecessary applications from the list of items that open at login.

Reducing startup applications is one of the easiest ways to make a noticeable difference without installing additional software.

2. Free Up Space on Your Main Drive

When your computer's main storage drive is nearly full, Windows or macOS may struggle to manage temporary files, updates, virtual memory, and other system operations.

Although low storage space does not automatically cause every slow boot problem, maintaining sufficient free space can help your computer operate more smoothly.

Start by checking how much storage remains available. On Windows, open Settings, select System, and click Storage. On a Mac, open System Settings and navigate to General, then Storage.

If your drive is almost full, try these steps:

• Delete temporary files and unnecessary downloads.
• Empty the Recycle Bin or Trash.
• Uninstall applications you no longer use.
• Move large videos, photographs, and documents to external storage or a trusted cloud service.
• Remove old installation files that are no longer needed.

Windows users can use the built-in Storage settings or Disk Cleanup utility to remove eligible temporary files. Review the selected categories carefully before deleting anything.

As a general target, try to maintain several gigabytes of free space, preferably more if you frequently install applications or download large files.

3. Check Whether Your Computer Uses an HDD or SSD

Your storage drive has a major influence on how quickly your computer starts.

Traditional hard disk drives (HDDs) use moving mechanical parts to read and write data. Solid-state drives (SSDs), by contrast, use flash memory and can access data much faster.

If your computer still relies on an older HDD, upgrading to an SSD may produce a much greater improvement than many software adjustments combined.

An SSD upgrade can help with:

• Faster operating system loading.
• Quicker application launches.
• Reduced waiting when opening files.
• Better responsiveness after signing in.

Before purchasing an SSD, check your computer's supported drive type, physical size, and connection interface. Some newer computers use M.2 NVMe drives, while others support SATA drives or have storage that cannot be upgraded.

Back up your important files before replacing a drive. If you plan to transfer your existing operating system to the new drive, ensure the migration process is compatible with your hardware and software.

4. Install Pending System Updates

An outdated operating system or problematic update can sometimes contribute to slow startup. Updates may include performance improvements, hardware compatibility fixes, security patches, and corrections for known software issues.

On Windows:

1. Open Settings.
2. Select Windows Update.
3. Check for available updates.
4. Install appropriate updates and restart when prompted.

On macOS, open System Settings, select General, and choose Software Update.

Keep in mind that installing updates can temporarily make startup slower because the system may need to configure files or complete installation tasks. Allow the process to finish before judging performance.

If the slowdown began immediately after a particular update, investigate whether the update is associated with the problem rather than repeatedly installing or removing updates without a clear reason.

5. Scan for Malware and Unwanted Software

Malware can consume system resources, launch hidden processes, and interfere with normal startup. Some potentially unwanted applications also install background services that slow down the boot process.

On Windows, use Windows Security to run a scan:

1. Open the Start menu and search for Windows Security.
2. Select Virus & threat protection.
3. Choose Quick scan.
4. If you suspect a persistent infection, consider a full scan or Microsoft Defender Offline scan.

On a Mac, review unfamiliar applications, login items, browser extensions, and configuration changes. Use reputable security software if you suspect malware.

Avoid downloading random PC optimization tools that promise to make your computer dramatically faster. Some provide little benefit, while others introduce unwanted software or encourage unnecessary changes.

If you discover suspicious applications, remove them using trusted procedures and change important passwords from a clean device if you believe your accounts may have been compromised.

6. Update or Troubleshoot Hardware Drivers

Hardware drivers help your operating system communicate with components such as graphics cards, network adapters, storage controllers, and other devices.

A faulty, outdated, or incompatible driver can sometimes cause delays during startup. This is particularly worth investigating if the problem appeared after installing new hardware, updating a driver, or connecting a particular device.

To troubleshoot drivers on Windows:

1. Right-click the Start button and open Device Manager.
2. Look for devices displaying warning symbols.
3. Check the manufacturer's website for compatible driver updates.
4. Install only drivers intended for your exact computer model or hardware.
5. Restart the system and test the startup time.

You can also disconnect unnecessary USB accessories, external drives, printers, and docking stations before starting the computer. If startup improves, reconnect devices one at a time to identify whether a particular accessory is causing delays.

Do not update every driver indiscriminately. If your computer started slowing down after a recent driver change, rolling back that specific driver may be more effective.

7. Check Your Computer's RAM Usage

Random access memory (RAM) allows your computer to keep active programs and data readily available. When memory is limited, the operating system may rely more heavily on storage, which can reduce responsiveness.

A computer with insufficient RAM may appear to start slowly, especially when several applications open automatically after login.

To check memory usage on Windows:

1. Open Task Manager.
2. Select the Performance tab.
3. Click Memory.
4. Observe how much memory is in use after the computer has finished starting.

You can also examine the Processes tab to identify applications consuming unusually large amounts of memory.

If your computer has limited RAM, close unnecessary applications, reduce browser tabs, and disable unneeded background programs. If memory usage remains consistently high during ordinary tasks, a RAM upgrade may help, provided your computer supports one.

Adding memory is not a guaranteed solution for slow startup, however. If the operating system takes a long time to reach the login screen, storage problems, firmware settings, or system errors may be more relevant.

8. Run System File Checks

Corrupted system files can interfere with normal Windows operation and may contribute to startup problems. Windows includes built-in tools that can check and repair certain types of system corruption.

To run System File Checker:

1. Open the Start menu.
2. Search for Command Prompt.
3. Select Run as administrator.
4. Enter the following command:

   sfc /scannow

5. Wait for the scan to finish and follow any repair instructions.

If Windows reports that it could not repair some files, you can use the Deployment Image Servicing and Management tool to repair the Windows component store. Open an administrator Command Prompt and run:

DISM /Online /Cleanup-Image /RestoreHealth

After the process completes, run sfc /scannow again if necessary.

These tools can address certain Windows system-file problems, but they will not resolve every cause of slow startup. Avoid interrupting the process while repairs are underway.

9. Turn On Fast Startup if It Is Available

Windows includes a feature called Fast Startup that can shorten boot time on supported systems. It works by saving some system information to a hibernation file when the computer shuts down.

On compatible Windows installations, you can check the setting as follows:

1. Open Control Panel.
2. Select Hardware and Sound, then Power Options.
3. Click Choose what the power buttons do.
4. Select Change settings that are currently unavailable if needed.
5. Look for Turn on fast startup and enable it if appropriate.
6. Save the changes.

The option may be missing on some computers, particularly if hibernation is unavailable or restricted.

Fast Startup does not fix every boot issue, and it can occasionally complicate troubleshooting involving drivers or hardware. If enabling it causes problems, turn it off again and test the computer.

Remember that restarting Windows is different from shutting down and powering on when Fast Startup is enabled. A restart performs a full Windows boot sequence.

10. Check for a Failing Hard Drive or SSD

A damaged or deteriorating storage drive can cause extremely slow startup, freezing, long loading screens, and unexpected errors.

Warning signs include:

• Startup times becoming progressively longer.
• Files taking unusually long to open.
• Frequent system freezes or crashes.
• Repeated disk-related error messages.
• Unusual clicking or grinding sounds from a mechanical HDD.

If you notice these symptoms, back up your important files immediately. Do not begin with intensive repair operations if the drive may be failing.

You can check drive health using the computer manufacturer's diagnostic utility or a reputable tool designed for your drive. Windows also offers disk-checking utilities, but a successful basic check does not guarantee that a drive is healthy.

If the computer contains an HDD that makes unusual mechanical noises, stop using it if possible and seek professional assistance. Continued operation may worsen the damage.

An SSD can also fail without making any noise, so unexplained slowdowns and read errors should not be ignored.

11. Review BIOS or UEFI Boot Settings

Your computer may spend a long time starting before Windows or macOS begins loading. This delay can occur during the hardware initialization stage.

Possible causes include unnecessary boot devices, peripheral detection delays, outdated firmware, or hardware configuration problems.

If your computer displays its manufacturer's logo for an unusually long time, consider the following:

• Disconnect unnecessary USB devices and external storage.
• Check whether the firmware is attempting to boot from the wrong device.
• Review the manufacturer's troubleshooting guidance for your model.
• Check for relevant BIOS or UEFI updates if the manufacturer identifies a startup-related fix.

Firmware updates require extra caution. Installing the wrong update or interrupting the process can prevent the computer from starting. Confirm the exact model, follow the manufacturer's instructions, and ensure the computer has reliable power before proceeding.

If you are not comfortable changing firmware settings, leave them unchanged and seek technical assistance.

12. Investigate Startup Delays in Windows

If the computer is still slow after trying the previous steps, Windows provides tools that can help identify applications and services responsible for delays.

Start with Task Manager and review startup applications. Windows may display an estimated startup impact for some programs, helping you decide which ones to disable first.

For a more detailed investigation, you can use Event Viewer:

1. Right-click Start and open Event Viewer.
2. Navigate to Applications and Services Logs.
3. Open Microsoft, then Windows, and locate the Diagnostics-Performance log if it is available.
4. Review recent startup-related events for recorded delays or errors.

The precise log location and available events can vary by Windows version. Focus