Hello everybody. I recently upgraded my RAM to 8gb ( Corsair Value Pack..it's all I could find here in rural Thailand that was compatible with my machine)...anyway, since the upgrade i get occasional crashes that involvle the screen flickering with colours and fast clicking noises on the audio as if the machine gets stuck in a 1/2 second loop..the only way to stop it is to do a hard power down. I ran Memtest and it resulted in the same crash again. I hope it's just a RAM problem but am worried that it could be more serious and that the fact that I installed new RAM is just coincidence....any suggetions ? Thanks in advance for advice. Anth.
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Faulty RAM?
- Thread starter jaguaretree
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No, but take out the upgraded RAM and put in the RAM from the original machine to see.
ok...shall try, thanks. Are these typical symptoms of bad RAM ? and can anybody advise me on a reliable brand of RAM ?
I'm not so sure about that, the best would be to put your old ram in, see what happens, then put the new RAM in 1 stick at a time to see if there's a problem with an individual stick. It's certainly not out of the question that the RAM is bad.
I had a similar issue with my 2012 MBP, I took a video at the time, see here:
http://www.youtube.com/watch?v=Z9RC78eL6BA&feature=player_embedded
I also had an 8GB pack of Corsair vengeance RAM, and after getting sick of the freezing, I tried swapping for the original RAM the MBP came with. After switching back, I have never had a freeze since. Hope this helps
http://www.youtube.com/watch?v=Z9RC78eL6BA&feature=player_embedded
I also had an 8GB pack of Corsair vengeance RAM, and after getting sick of the freezing, I tried swapping for the original RAM the MBP came with. After switching back, I have never had a freeze since. Hope this helps
my screen goes a bit more nuts than that....... I'll dump the Corsair Value Pack RAM..... anybody recommend a reliable brand for MBP ?
In your first post you said Memtest crashes when you use it, this indicates it is the RAM, Memtest themselves write this in their Manual.
But, you should run it in Single User Mode, this will test all the memory, you could also run Apple Hardware Test
Intel-based Macs: Using Apple Hardware Test
and see if you get Errors.
Crucial has plenty of problems on Mac, it's almost a daily occurrence here on MR forums.
I've not see that sentiment against Crucial. As long as you purchase the correct module for your machine (they have guides), you shouldn't have any trouble and they will back you if you do.
Most recent (like last week) was a 4GB kit for a mid-2007 2.4/2.2 15". Passes single-user mode memtest 100% (and of course, the POST).
Slightly OT, I was in the market for an SSD last October and came to the conclusion the Crucial MX 512 GB was the winner (for the 2009 MBP). Zero issues.
There are several vendors for RAM I like: Crucial, Kingston, OWC are my top three. Can't remember the runners up. Since its 0347 in the morning, I'm fading fast and memory is the second thing to go.
(don't bother asking me what the first thing is...)