Macbook Crash - Horizontal Lines

[nopw]

Hi all.
I was just browsing though the web and suddenly my mac "stopped responding" and displayed strange horizontal lines / blocks.
I had 1 flash stream active and 4 website tabs open.

Is there something i should worry about?
What causes that?

System is a Macbook Pro 15" Mid 2012 + 16GB Mem

 

[mohsy90]

Try a PRAM and SMC reset. If that doesnt work, it could be a bad graphics card or logic board.

 

[MisterKeeks]

Probably OK. Did you have to hard shut it off, or did it unlock?

If it's a recurring theme, by all means, talk to Apple.

 

[nopw]

Hi.
I couldnt do a thing. i tried to open expose or anything that would normally change the whole screen appearance, but nothing happened.

I have a non stock memory inside: corsair vengeance.
Could this be a reason?

This is the first time this happened (mac is just 7 days old).

 

[mohsy90]

Hi.
I couldnt do a thing. i tried to open expose or anything that would normally change the whole screen appearance, but nothing happened.

I have a non stock memory inside: corsair vengeance.
Could this be a reason?

This is the first time this happened (mac is just 7 days old).

Looks like that could be the reason, seeing as thats the only thing you've changed on the computer since the purchase. Replace the OEM ram and see if issue persists.

 

[nopw]

Hi i booted up in Single User Mode and did a:
"memtest all"
It was completed in 3730 seconds?!
Without any errors.

From what i read so far, a complete memtest takes up to 12 hours.

did i use the wrong command?

thanks for the replies so far!

 

[nopw]

Thank you for all responses.

I got into contact with the Apple Support and they let me do some bootup commands i have not heard of so far.
I have not had this problem again.

If there is any further development in this case ill revive this thread to keep the community informed .