Computer or App Frozen: How to Force Quit and Recover
What to do when an app stops responding or your entire screen is frozen
When an app or your whole screen freezes, do not mash buttons or yank the power cable. There is usually a quick keyboard shortcut to force-close the stuck app without restarting your entire computer. Try that first. A full restart is the last resort.
Before anything else: wait about 15 to 30 seconds. Some freezes are temporary — your computer might be processing something heavy (a large file save, an update, a complex calculation) and will catch up on its own. If the hard drive or activity light is blinking, something is still happening. Give it a moment.
If it has been more than 30 seconds and nothing is responding, work through the steps below.
Force quit a single app
- Press Cmd + Option + Esc to open the Force Quit Applications window
- Select the frozen app from the list. If it is frozen, it will usually say "Not Responding" next to its name
- Click Force Quit, then confirm
Alternatively, right-click (or Control + click) the app's icon in the Dock. If the app is frozen, you will see Force Quit in the menu. If you only see Quit, hold down the Option key and it will change to Force Quit.
You can also force quit from the Apple menu: click the Apple icon in the top-left corner and select Force Quit to open the same window.
Any unsaved work in the force-quit app will be lost.
When the whole Mac is frozen
If nothing responds to mouse or keyboard:
- Try Cmd + Option + Esc first — sometimes the Force Quit window will still appear even if everything else is stuck
- If that does not work, press and hold the Power button (or Touch ID button) for about 10 seconds until the screen goes black and the Mac powers off
- Wait a few seconds, then press the Power button again to turn it back on
A forced power-off should be a last resort. It can cause unsaved work to be lost in any open app, not just the frozen one.
Frequently Asked Questions
Will force quitting an app damage my computer?▾
No. Force quitting ends the app process and releases its memory back to the system. It will not damage your computer. However, you will lose any unsaved work in that app. The app itself is fine and you can reopen it immediately.
What is the difference between force quitting and restarting?▾
Force quitting closes one specific app. Restarting shuts down and restarts your entire operating system, closing all apps in the process. Always try force quitting the frozen app first. Only restart if the entire system is unresponsive.
My computer keeps freezing repeatedly. What should I do?▾
Repeated freezes suggest an underlying problem. Check how much free disk space you have, look for apps using excessive memory or CPU in Task Manager (Windows) or Activity Monitor (Mac), make sure your OS and drivers are up to date, and check for overheating. If it keeps happening, it could be a hardware issue like failing RAM or a dying hard drive — contact IT or a repair service.
Is it safe to hold the power button to shut down?▾
It is safe as a last resort but should not be your regular shutdown method. A forced power-off cuts power immediately without letting the operating system close files and save state properly. In rare cases this can corrupt open files or cause filesystem issues. But if your computer is completely frozen and nothing else works, it is the right thing to do.
Why does my computer freeze when I open too many browser tabs?▾
Each browser tab uses memory (RAM). A typical tab uses 50 to 300 MB depending on the page content. Open enough tabs and you exhaust your available RAM, forcing the system to use much slower disk storage as overflow (called "swap" or "virtual memory"). This makes everything dramatically slower and can lead to freezes. Close tabs you are not actively using or use a tab suspender extension that unloads inactive tabs.