Mac screen flickering or glitching
Screen flicker is caused by refresh rate mismatch, outdated graphics drivers, or loose cables. Change the refresh rate to 60Hz, update macOS, or test with a different cable. External monitor flicker means the cable is bad.
Mac screen flicker comes from graphics driver issues, incompatible refresh rates, or hardware problems like loose cables or failing displays. Changing refresh rate to 60Hz, updating macOS, and testing different cables isolate the cause. Most cases resolve in minutes.
Fix-IT-Bot will walk you through each step — just tap, no typing needed.
Skip — I just want a technicianCommon mistakes to avoid
- Changing both refresh rate AND resolution at the same time — change one at a time so you know which fixed it
- Assuming display is failing without testing different cables first — cable replacement is much cheaper than display repair
- Not restarting after changing display settings — changes don't always apply without restart
Signs you need professional help
- Flicker persists after trying all troubleshooting steps
- Flicker is accompanied by kernel panics or unexpected restarts
- Display suddenly has black lines or dead pixels along with flicker
Book a technician
We can fix most issues remotely in 15 minutes. Weekend appointments — book your slot and we handle the rest.
Can't fix it yourself?
Most issues are resolved remotely in 15 minutes. Weekend appointments only — no parts, no in-home visit needed.