problem with memory upgrade

Okay so I got my 21.5 i7... played with it for 2 days and then installed another 8GB of Crucial memory which I purchased from Amazon. Several strange things started happening. When I was swiping through screens I would often get a purely gray screen. In addition when that happened, I couldn't see the other screens (windows or whatever it's called) at the top of the screen. Finally when I installed a game for my daughter it (from the MacAPP store), it would freeze the entire computer.

I uninstalled the game and only got the grey screens. I've uninstalled extra memory and everything seems to be MUCH better. So I'm back at the original 4GB from Apple. Ironically the computer is actually running faster.

So I'm assuming I had a bad batch of memory. Any suggestions? Anyone have this problem before? I'm wondering if I should just stick with the 4GB or pay Apple the ridiculous extra $$$ for their memory or order another batch of 8GB directly from Crucial.com???

A little help would be greatly appreciated.

 

Return RAM

DONT BUY FROM RAM FROM APPLE

Buy RAM from Amazon Crucial OWC Newegg Tiger

It appears you just got bad RAM

 

it could also been ram that wasn't seated correctly. you could always put the new ram back in, make sure it's firmly seated in the computer than try it out again. If it goes buggy, send it back Crucial has a good rep for fixing problems like this.

 

Lifetime guarantee. They rock. Mention your issues and they may have some suggestions as well.

 

Is this a common occurrence when you add RAM to a Mac?

 

No more or less common than adding RAM to anything else.

You need to 1) make sure you buy the right stuff, 2) make sure you install it properly, and 3) hope you didn't get a bad batch.

I always go directly to crucial.com and let their app tell me exactly what I need. That way I have no chance of screwing up step 1. Step 2 I have from years of experience, hacking around the insides of PCs before I got a Mac; on unfamiliar systems like the MacBook I go to iFixit.com and follow their step-by-step instructions. Step 3.. I've never gotten a bad one, but it happens.

 

I'd recheck to make sure the ram is properly seated.

Remove the stock Apple ram, install Crucial ram and see if problem persists.
Switch.
Remove Crucial ram, install Stock ram and see if problem persists.

OWC is a great, great place to get your RAM from.