I just received my ram today for my 2010 13" MacBook Pro. I just tryed to install it and turn the macbook back on and it just freezes at the initial white apple screen. I tried removing it and re-installing it 3 times and no luck. I put the original back in and it started up, but took like 2 minutes to start and seems to be running sluggish. I bought the ram that was suggested to me on here. Is this not the right ram for my Macbook? I know that its DDR3 - 1333 not 1066, but I was told that it would be fine. This is it: http://www.newegg.com/Product/Product.aspx?Item=N82E16820231295&nm_mc=TEMC-RMA-Approvel&cm_mmc=TEMC-RMA-Approvel-_-Content-_-text-_- Can someone give me some guidance.