Graphic card problem on Imac

Hi i have graphic problems on my Imac.

Some things looks okey on the computer like photos, Safari, and some other programs.

But on som programs like finder, System settings i get rasters around the menues and stuff.

Look at the screenshot around the mousepointer.

Mac OS version is 10.5.8

Best Regards Jonas

Yes, that's a problem.

What did your local Apple Store or Apple Authorised Service Provider say when you took it in and showed it to them?

Is your machine still under warranty?

No it´s not under warranty, havent took it to a dealer.

I was hoping someone here at the forum could point me into a direction

// Jonas

If the machine is not under warranty, it's probably going to be expensive to repair as that looks very much like a GPU problem. And since the GPU on your model iMac is surface mounted to the logic board, that would mean a logic board replacement.

You should take it on in and let Apple look at it as chas_m advised. Ask them to give you an estimate prior to allowing them to do any work. You'll probably have to pay their minimum diagnostic fee.

Regards.