Strange screen on iMac return from sleep

[fbx1989]

I have a (another) mid-2017 27" iMac 5K 3.8MHz w/ 2TB Fusion drive. Am within the return window from Best Buy locally.

On clicking mouse on sleeping iMac I (sometimes) get the screen as in picture below. It disappears quickly most time, or on touch of a key other times, and goes to sign-in screen where I input password.

This seems irregular to me and I'm wondering if it's been seen by others and is a known issue of some kind.

Appreciate all input--

 

[Brookzy]

Is your software definitely up to date?

Are you running any beta software?

Have you got FileVault enabled?

 

[fbx1989]

Sierra 10.12.6, no beta software, File Vault not enabled.

 

[Brookzy]

Hmm. The thing is it is a common occurrence, especially for newly-released Macs, and they get fixed after a couple of software updates. The same happened with the latest MacBook Pros, for example.

On the other hand you could just exchange it to avoid problems in the future.

In the first instance, I would probably erase and reinstall macOS.

 

[bernuli]

I have a (another) mid-2017 27" iMac 5K 3.8MHz w/ 2TB Fusion drive. Am within the return window from Best Buy locally.

On clicking mouse on sleeping iMac I (sometimes) get the screen as in picture below. It disappears quickly most time, or on touch of a key other times, and goes to sign-in screen where I input password.

This seems irregular to me and I'm wondering if it's been seen by others and is a known issue of some kind.

Appreciate all input--

View attachment 713647

That video output looks like a problem with with the video card.

 

[nambuccaheadsau]

Take it back.

 

[fbx1989]

Thanks all. Returned to sender.

 

[RUQRU]

Thanks all. Returned to sender.

Correct decision. Never try to fix a machine that is inside the return window. Not your problem. Get a new one.