Q: macbook pro mid 2012 flickering screen

hi..bought a macbook pro mid 2012 core i7 750GB,8gb just last year......for the past one month i've been experiencing some massive screen flickering

Whenever it happens,i adjust the screen and it stabilizes for a while then comes back after a few minutes....I took the chance to open the mac and check with the display cable and everything seems very intact,I've cleaned the motherboard and reassembled it but the problem still persists....

I also had a windows partition and after the reassembling i can't even boot to windows anymore and it doesn't show in the finder anymore

i tried reinstalling the windows with bootcamp but i end up with an error "non-system error,press any key to reboot" but the doesn't seem to work unless i force shutdown with power button and then reboot

i am using osx yosemite 10.10.5 and it is also kind of running slower than it used to be...please help me out....the mac is really new and i don't wanna lose it

I'm actually in love with it

Help me out.....

Posted on May 11, 2016 1:53 PM

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Q: macbook pro mid 2012 flickering screen

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by theratter,

theratter May 11, 2016 2:03 PM in response to Gerron3g
Level 4 (3,917 points)

Desktops

May 11, 2016 2:03 PM in response to Gerron3g

See if the following applies to your computer: 2011 MacBook Pro Repair Extension Program for Video Issues.
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by macjack,

macjack May 11, 2016 2:08 PM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 11, 2016 2:08 PM in response to Gerron3g

It sounds like a bad graphics card, run Apple Hardware Test.
Using Apple Hardware Test - Apple Support
For the slowness, please download and run EtreCheck, created by one of own helpers here in ASC. It is a diagnostic tool that's very useful to us in finding problems. Also it will give us further specs on your Mac. After it runs post the log file here. It will contain no personal information
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by Gerron3g,

Gerron3g May 12, 2016 4:51 AM in response to Gerron3g
Level 1 (8 points)

Notebooks

May 12, 2016 4:51 AM in response to Gerron3g

I think the slowness is from the hard drive cos I swapped the toshiba 750gb with a Hitachi 250gb just last night and it was working perfectly well which is running on mavericks....can there be a way to get my 750gb back??

I also tried the etre check tool and I don't really seem to know where the problem is...I'll send u the report generated and maybe u can interpret it for me...tnx
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by Gerron3g,

Gerron3g May 12, 2016 4:56 AM in response to macjack
Level 1 (8 points)

Notebooks

May 12, 2016 4:56 AM in response to macjack

I think the slowness is from the hard drive cos I swapped the toshiba 750gb with a Hitachi 250gb just last night and it was working perfectly well which is running on mavericks....can there be a way to get my 750gb back??

I also tried the etre check tool and I don't really seem to know where the problem is...I'll send u the report generated and maybe u can interpret it for me...tnx
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by macjack,

macjack May 12, 2016 12:33 PM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 12, 2016 12:33 PM in response to Gerron3g

Are they both 7200 rpm drives?
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by Gerron3g,

Gerron3g May 12, 2016 1:26 PM in response to macjack
Level 1 (8 points)

Notebooks

May 12, 2016 1:26 PM in response to macjack

No please...the toshiba 750gb is 5400rpm
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by macjack,

macjack May 12, 2016 1:32 PM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 12, 2016 1:32 PM in response to Gerron3g

Well, that would also make some difference in speed. Did you run Hardware Test?
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by Gerron3g,

Gerron3g May 12, 2016 2:02 PM in response to macjack
Level 1 (8 points)

Notebooks

May 12, 2016 2:02 PM in response to macjack

No..but the 750gb used to ran very fine but after the reassembly,whenever I even move the cursor,I get a rainbow wheel and when I'm opening a folder or an app it's even worse....the hitachi doesn't do that,it rans very smooth.
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by macjack,

macjack May 12, 2016 2:11 PM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 12, 2016 2:11 PM in response to Gerron3g

Yes, I understand but without running the hardware test, it's very hard to tell. You may have even damaged the drive when you swapped them out.
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by Gerron3g,

Gerron3g May 12, 2016 2:15 PM in response to macjack
Level 1 (8 points)

Notebooks

May 12, 2016 2:15 PM in response to macjack

How do the hardware test please....cos I can't even install windows with boot camp,it tells me,"the partition is locked ""
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by macjack,

macjack May 12, 2016 2:19 PM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 12, 2016 2:19 PM in response to Gerron3g

Follow the directions in the Apple Support link I posted.
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by Gerron3g,

Gerron3g May 13, 2016 3:58 AM in response to macjack
Level 1 (8 points)

Notebooks

May 13, 2016 3:58 AM in response to macjack

this is the result obtained from Etrecheck and the AHT said "No Troubles Found"..
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by macjack,

macjack May 13, 2016 8:17 AM in response to Gerron3g
Level 9 (55,709 points)

Mac OS X

May 13, 2016 8:17 AM in response to Gerron3g

There's a lot of red which looks like adware, click to remove. I really can't read the log any further because it's so small. Please just copy and paste it, that way it will be readable.
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