Mac Troubleshooting brings together practical fixes for common Mac and macOS problems. Start with the least invasive steps, test after each change, and move to recovery or hardware diagnostics only when simpler solutions do not work.
Startup & Recovery Problems
If a Mac will not turn on, stops at the Apple logo, cannot find its startup disk, or repeatedly fails during startup, begin with power, accessories, Safe Mode, and macOS Recovery before considering destructive actions.
Performance & Heat
Slow performance, excessive heat, unexpected sleep behavior, high CPU usage, and poor battery life can have software, workload, power, or hardware causes. Check Activity Monitor and recent changes before replacing hardware or erasing the Mac.
Devices, Audio & Camera
USB devices, external displays, microphones, cameras, Bluetooth accessories, and docks can fail because of permissions, cables, ports, power, settings, or software. Direct connections and built-in macOS diagnostics are usually the best first tests.
Important: If a troubleshooting step could erase data, reinstall macOS, or modify a disk, make sure important files are backed up first whenever possible.
Browse Mac Troubleshooting
Startup & Recovery
- How to Fix a Mac Showing a Flashing Folder With a Question Mark
- How to Fix a Mac Stuck on a Black Screen at Startup
- How to Fix a Mac Stuck on the Apple Logo
- How to Fix a Mac That Freezes at the Login Screen
- How to Fix a Mac That Keeps Restarting During Startup
- How to Fix a Mac That Won’t Turn On
- How to Fix a Mac With a Kernel Panic During Startup
- How to Recover Files From a Mac That Won’t Boot
- How to Start a Mac in Safe Mode
- What is NVRAM and why is it necessary to reset it in Macbook, iMac, Mac mini?
Performance & Power
- How to Change MacBook Sleep Settings Without Disabling Security
- How to Check Mac Sleep and Wake History Using Terminal
- How to Check What Woke Your MacBook from Sleep
- How to Fix a Mac That Sleeps or Wakes Unexpectedly
- How to Fix a MacBook That Does Not Go to Sleep When the Lid Is Closed
- How to Fix a MacBook That Does Not Wake from Sleep
- How to Fix a MacBook That Wakes Up by Itself
- How to Fix High CPU Usage After Updating macOS
- How to Fix photoanalysisd Using Too Much CPU on a Mac
- How to Prevent Login Items from Using Too Much Memory on a Mac
- How to Reduce Memory Pressure on a Mac Without Restarting
- How to Stop mds_stores from Causing High CPU Usage on a Mac
- How to Stop Safari Tabs from Using Too Much Memory on a Mac
- How to Stop USB Devices from Waking a MacBook
- The kernel_task process overloads the MacBook
- Why Does a MacBook Battery Drain While Sleeping? Causes and Fixes
- Why Does a MacBook Stop Charging at 80%? How to Charge It to 100%
Displays & Peripherals
Wi-Fi, Bluetooth & AirDrop
- How to Connect a Mac to an iPhone Personal Hotspot
- How to Fix a Bluetooth Keyboard That Won’t Connect to a Mac
- How to Fix a Bluetooth Mouse That Keeps Disconnecting from a Mac
- How to Fix AirDrop Not Working on Mac
- How to Fix Bluetooth Audio That Keeps Cutting Out on a Mac
- How to Fix Bluetooth Devices That Keep Disconnecting from a Mac
- How to Fix Bluetooth Not Working on a Mac
- How to Fix Wi-Fi Problems on a Mac
- How to Remove and Re-Pair a Bluetooth Device on a Mac
- How to Remove Proxy Settings That Block Internet Access on a Mac
- How to Reset Bluetooth Settings on a Mac Without Losing Data
Audio & Camera
- How to Allow or Deny Accessibility Access for an App on a Mac
- How to Block an App from Accessing Files and Folders on a Mac
- How to Check Which Apps Can Access Your Camera and Microphone on a Mac
- How to Check Which Apps Have Full Disk Access on a Mac
- How to Check Which Apps Have Location Access on a Mac
- How to Fix the Camera Not Working on a Mac
- How to Fix the Microphone Not Working on a Mac
- How to Remove Full Disk Access from an App on a Mac
- How to Reset an App’s Privacy Permissions on a Mac
- How to Review the App Privacy Report on a Mac
- How to See Which Apps Can Record Your Screen on a Mac