Your Mac isn't detecting your external monitor
Unplug the monitor cable from your Mac and wait 10 seconds, then plug it back in firmly. If it still doesn't show, restart your Mac. Most monitors connect as soon as the cable is seated properly — check the cable is going into the right port.
Your Mac doesn't detect the monitor because the cable is loose, the port is disabled, or the monitor needs a fresh connection. Reseat the cable firmly, restart your Mac, and check that the monitor is set to the right input source.
Fix-IT-Bot will walk you through each step — just tap, no typing needed.
Skip — I just want a technicianCommon mistakes to avoid
- Not pushing the cable in all the way — it needs to click into place
- Buying an adapter when the correct cable would work directly
- Restarting the monitor instead of the Mac — the Mac needs the restart
- Plugging into the wrong port on the Mac (thunderbolt vs USB-C vs HDMI)
Signs you need professional help
- You've tried multiple cables and ports and the monitor still doesn't show
- Monitor works on another Mac but not yours — your display port is damaged
- Monitor worked yesterday but suddenly stopped with no connection change
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.