GPU iMac 27, late 2013, help needed

[milkovone]

Hello guys,
please I have this trouble from yesterday, I don't know what was happened, but I was worked as usually in Photoshop and this happened to me.
At first few (2-3 seconds) some "ghost" shapes in type (black type goes 50/50 black and white) and after few seconds this mashup.

I restarted my computer and all, but it does the same, in all documents in photoshop.
Other apps are going good it seems.

Please can you help me? I thing its some problem maybe with GPU?

Thank you very much and have nice time,
Petr Milk

 

[keysofanxiety]

Hello guys,
please I have this trouble from yesterday, I don't know what was happened, but I was worked as usually in Photoshop and this happened to me.
At first few (2-3 seconds) some "ghost" shapes in type (black type goes 50/50 black and white) and after few seconds this mashup.

I restarted my computer and all, but it does the same, in all documents in photoshop.
Other apps are going good it seems.

Please can you help me? I thing its some problem maybe with GPU?

Thank you very much and have nice time,
Petr Milk

Definitely looks like GPU failure, it'll need a new Logic Board. Do you still have AppleCare?

 

[milkovone]

Definitely looks like GPU failure, it'll need a new Logic Board. Do you still have AppleCare?

Thank you very much .., yes I have still Apple Care varanty (I hope).

 

[keysofanxiety]

Thank you very much .., yes I have still Apple Care varanty (I hope).

You can verify by typing in your serial number here: https://selfsolve.apple.com/agreementWarrantyDynamic.do