Solved! Vaio Z21 Display failures and freeze

[stephan.ostermann]

Somehow I got lost with my loved Vaio Z21.

Some days everything works fine and suddenly I get a black display with crazy marks on.

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Does anyone has an idea?

It happens directly at boot or also just during working under windows.

 

[Sohom]

Its called artifacts and indicates to a gpu or display adapter problem; can also be the PSU.