## Fixing Screen Flickering on MacBook Pro
To fix screen flickering on your MacBook Pro, try updating your operating system, disabling automatic graphics switching, and resetting the System Management Controller (SMC) and the Power Management Unit (PMU).
## Step-by-Step Guide
1. **Update your operating system**: Ensure your MacBook Pro is running the latest version of macOS. Go to System Preferences > Software Update to check for updates.
2. **Disable automatic graphics switching**: Go to System Preferences > Energy Saver, and uncheck the box next to “Automatic graphics switching”. This can help stabilize your screen.
3. **Reset the SMC**: Shut down your MacBook Pro, locate the following keys: Power button, Command (⌘) + Option (⌥) + Shift (⇧) + Power button. Press and hold these keys while powering on your MacBook Pro. Release the keys when you hear the boot chime for the second time.
4. **Reset the PMU**: This step is only applicable to older MacBook Pro models. Shut down your MacBook Pro, locate the following keys: Power button, Command (⌘) + Option (⌥) + P + R. Press and hold these keys while powering on your MacBook Pro. Release the keys when you hear the boot chime for the second time.
5. **Check for loose connections**: Ensure all external display cables are securely connected to your MacBook Pro.
6. **Run a diagnostic test**: Restart your MacBook Pro and immediately hold the ‘D’ key. This will run a diagnostic test on your MacBook Pro’s hardware.
## Frequently Asked Questions
– **Q: Why is my MacBook Pro screen flickering?**
A: Screen flickering can be caused by outdated software, faulty hardware, or issues with the display settings.
– **Q: Will resetting the SMC and PMU delete my data?**
A: No, resetting the SMC and PMU will not delete any of your data.
– **Q: What if none of these steps work?**
A: If the issue persists, consider visiting an Apple Store or an authorized service provider for further assistance.
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