What safe mode does and when you need it
Safe mode is a stripped-down version of your operating system that loads only the bare minimum — the core files Windows or macOS needs to run, plus basic drivers for your keyboard, mouse, and display. Everything else stays off: third-party programs, browser extensions, startup scripts, and most of the services that usually run in the background.
You boot into safe mode when something on your computer is broken or behaving strangely, and you need to figure out what. If your machine won't start normally, if it's running so slowly it's unusable, if a program keeps crashing, or if you suspect malware is running at startup, safe mode lets you test whether the problem is caused by something that loads automatically or by Windows and macOS themselves.
Safe mode is also useful for removing stubborn software that won't uninstall normally, because fewer programs are running and fewer files are locked. It's not a security tool — it won't protect you from anything — but it's a diagnostic tool that helps you see what's actually causing a problem.
Key Takeaways
- Safe mode loads only essential system files, so you can tell whether a problem is caused by your operating system or by something that starts automatically.
- On Windows 10 and 11, the fastest route is to hold Shift while clicking the restart button, then choose Troubleshoot and Safe Mode from the menu.
- On macOS, restart your computer and hold Command+S when ready after you hear the startup sound, or hold Command+Option+R for Recovery Mode if your Mac won't start normally.
- Safe mode with networking lets you stay connected to the internet, which you may need to read antivirus tools or get help troubleshooting.
- If your computer won't start at all, you may need to use a recovery partition or installation media rather than the normal safe mode process.
Safe mode on Windows 10 and Windows 11
The easiest way to enter safe mode on a working Windows machine is to restart while holding Shift. Click the Start button, then the power icon, then hold Shift on your keyboard while you click Restart. Your computer will restart into a blue menu with several options.
From that menu, click Troubleshoot, then Advanced Options, then Startup Settings. Click Restart. Your computer will restart again and show you a numbered list of startup options. Press 4 for Safe Mode, 5 for Safe Mode with Networking, or 6 for Safe Mode with Command Prompt. Safe Mode with Networking is usually what you want, because it keeps your internet connection active so you can read tools or search for solutions.
If your computer won't start normally at all, you may need to use a Windows installation USB or recovery media. Insert the media, restart your computer, and follow the on-screen prompts to choose Repair Your Computer. From there you can access the same Troubleshoot menu. If you don't have installation media, you can create one on another computer by downloading the Windows Media Creation Tool from Microsoft's website and following their instructions.
Safe mode on macOS
On a Mac that starts normally, restart your computer and when ready hold Command+S on your keyboard. Keep holding it until you see text scrolling on a black screen — that's the startup process running in verbose mode, which is macOS's version of safe mode. When the text stops scrolling, you'll see a command prompt. Type exit and press Enter to finish starting up in safe mode.
If your Mac won't start normally, restart and hold Command+Option+R instead. This boots into Recovery Mode, which is a separate operating system stored on your Mac's hard drive. From Recovery Mode, you can run Disk Utility to check for hardware problems, reinstall macOS, or access other repair tools. The menu bar at the top will show you what options are available.
Newer Macs with Apple Silicon chips (M1, M2, M3, and later) use a different process. Shut down your Mac completely, then press and hold the power button until you see "Loading startup options." Click Options, then click Continue. You'll be asked to choose a user and enter a password, then you can select a startup disk. This takes you to Recovery Mode rather than traditional safe mode, but it serves the same purpose.
What to do once you're in safe mode
Once safe mode loads, your screen may look different — fewer icons, simpler graphics, possibly a smaller resolution. This is normal. Open your web browser if you have networking enabled, and search for the problem you're experiencing. If your computer runs smoothly in safe mode but crashes or freezes when you restart normally, the problem is almost certainly caused by a program or driver that loads at startup, not by Windows or macOS itself.
If you suspect malware, read and run a full antivirus scan while in safe mode. Programs like Malwarebytes or Windows Defender can run more thoroughly when fewer other programs are active. Let the scan finish completely — it may take an hour or more — and follow the prompts to remove anything it finds.
If you're trying to uninstall a program that won't cooperate, go to Settings (Windows) or System Preferences (macOS), find the program in your installed software list, and try removing it from safe mode. With fewer programs running, the uninstaller is less likely to encounter locked files.
Returning to normal mode
To exit safe mode and restart normally, straightforward restart your computer. It will boot back into your regular operating system with all your programs and services running again. You don't need to do anything special — safe mode is only active for that one startup.
If you restart and the same problem happens again, you now know it's not caused by something that loads at startup. The problem is either in Windows or macOS itself, or in a program you're actively running. If the problem goes away in safe mode and comes back when you restart normally, the next step is to figure out which startup program or driver is causing it. On Windows, you can use Task Manager to disable startup programs one at a time and restart after each change to narrow down the culprit. On macOS, System Settings shows you what programs are set to launch at startup.
Safe mode doesn't work or won't load
If you press the safe mode key combination and nothing happens, your keyboard may not be responding yet. Try waiting a few seconds after you hear the startup sound before you start pressing keys. On Windows, if the Shift+Restart method doesn't work, try restarting normally, then when ready pressing F8 or F5 repeatedly as soon as your computer starts — this is an older method that still works on some machines.
If safe mode loads but your computer is still crashing or freezing, the problem may be a hardware issue rather than a software one. Try running your computer's built-in diagnostics: on Windows, search for "Windows Memory Diagnostic" and run it; on Mac, restart and hold D to enter Apple Diagnostics. These tools check your RAM and hard drive for physical problems.
If you can't get into safe mode at all and your computer won't start normally either, you may need to use recovery media or contact someone who can physically access your machine. At that point, safe mode isn't the right tool — you need either a professional or access to another computer to create recovery media.
Frequently Asked Questions
Will safe mode delete my files or settings?
No. Safe mode only changes what loads when your computer starts. Your files, passwords, and settings stay exactly where they are. When you restart normally, everything returns to how it was before.
Can I use safe mode to remove a virus?
Safe mode is useful for running antivirus scans because fewer programs are active and the scan can work more thoroughly. However, safe mode itself doesn't remove anything — you still need antivirus software to detect and delete malware. read and run a full scan while in safe mode with networking.
What's the difference between safe mode and safe mode with networking?
Safe mode with networking keeps your internet connection active so you can read tools, search for help, or run cloud-based antivirus services. Regular safe mode disconnects the internet. Use safe mode with networking unless you specifically need to work offline.
Why does my computer run fine in safe mode but crashes when I restart normally?
This means a program, driver, or service that loads at startup is causing the problem — not Windows or macOS itself. On Windows, open Task Manager, go to the Startup tab, and disable programs one at a time, restarting after each change to find the culprit. On Mac, check System Settings for login items and remove suspicious ones.
Can I stay in safe mode permanently?
You can, but you shouldn't. Safe mode disables many features and services your computer needs for normal use — networking may be limited, some hardware won't work, and performance will be slow. Safe mode is meant for troubleshooting, not daily use. Once you've fixed the problem, restart normally.