horizontal lines on updated regions of display

[ytsurk]

ever seen something like this:

started happening after replaceing a broken HD in my macbook pro 17" (MA611..).

i did not find anything about this ..,
any idea - anyone ?

already resetted PRAM and SMC without any change.

 

[maflynn]

Looks like a bad GPU to me

Is it confined to a single app, or does it happen all the time, regardless of what app is in the foreground? Are you running Mountain Lion or an older OS - I'm thinking if you're on the beta, maybe its related to buggy code.

 

[terraphantm]

This happens to my mom's Lenovo laptop; seems to be heat related. So I would say probably a bad GPU.

Might be worth replacing the thermal paste with some arctic silver or something along those lines to see if that helps bring the temperatures down.

 

[charlieegan3]

Are you under applecare?

 

[ytsurk]

i'm on mountain lion (10.7.4) - no beta so far that i know.

this happens in all apps - if not fullscreen,
and in every menu item, as soon as i hover an entry ..
also the clock (only) is affected on the screensaver ..

it's not really hot thoe .., but maybe i messed up something when exchaning the HD ..

no apple care

 

[maflynn]

Since you're on the non beta and occurring on all apps, I suspect a hardware failure. Take it to apple to confirm though you may have to pay $$ to have it fixed

 

[ytsurk]

i reinstalled mountain lion and the issue disappeared.

so i guess the installed OS on the HD was maybe a BETA ...,
how would this be recognizable ? (i cannot look it up anyway anymore now)

thx for your inputs