Kevin Lewis3 wrote:
Where did you buy your memory at?
Although cheap memory is still good, it's not a place to save $5. Buy from a reputable manufacturer, whose standards meet or exceed those of Apple itself. Crucial.com is a good place. Also, Kingston is another good brand. Don't buy the really cheap stuff. Yes it might work. But the failure rate is higher, so you get it installed, spend days trying to diagnose a problem, try to send it back, then you're going crazy. The veterans around here stay with the name brands for memory.
As an example I just bought 8GB of some off-brand on Amazon. It was $30. Got it, installed it, had a memory fault. I had to ship it back, ordered Kingston memory for $15 more. Then I went to read the reviews of the off-brand. Many were good, but a significant number were bad. That's what happens with the cheap stuff. Kingston and Crucial do a 100% quality control. Cheap brands don't.
Don't buy from eBay, since PayPal will not help you and returns are impossible. Amazon is the best.