Issue with Square Register Display – Showing Exclamation Mark (!)

NAGAREYAida — Sun, 21 Sep 2025 07:24:56 GMT

Dear Square Support Community,

I am currently experiencing an issue with the customer display screen on our Square Register. The screen is not functioning and is only displaying a black background with a white exclamation mark (!) .

We have already:
- Checked the power connection and restarted the POS
- Checked if all cables are properly connected
- Make sure that the software is up to date

Despite this, the screen remains unresponsive and unusable.

We would appreciate your guidance on how to resolve this issue as soon as possible, as this display is critical to our operations.

Thank you.

Re: Issue with Square Register Display – Showing Exclamation Mark (!)

Ellie_ — Sat, 05 Jul 2025 01:02:58 GMT

Hi there, @NAGAREYAida,

Thank you for reaching out and providing a clear overview of the troubleshooting steps you've already taken. The issue you're describing—where the customer display shows a black screen with a white exclamation mark—typically indicates a hardware or firmware issue that may require further support beyond basic troubleshooting.

Since you've already:

Verified the power connection and restarted the device
Ensured all cables are secure
Confirmed the software is up to date

The next recommended steps are:

Perform a hard reset of the Customer Display:
- Unplug the customer display cable from both the display and the Register.
- Wait about 60 seconds, then reconnect the cable firmly at both ends.
- Restart the Square Register.
Check for firmware updates specifically for the Customer Display:
- Go to Settings > Hardware > Customer Display on the Register and see if an update is available.
Try swapping cables (if available), as a damaged cable could cause display errors.

If the issue persists after these steps, it's likely a hardware-related fault. If it persists, please let us know the version of device you are running and we can get this escalated. You can also mention the white exclamation mark symbol, as it helps their team identify potent

thread Re: Issue with Square Register Display – Showing Exclamation Mark (!) in Hardware Setup & Troubleshooting

Issue with Square Register Display – Showing Exclamation Mark (!)

Re: Issue with Square Register Display – Showing Exclamation Mark (!)