I am new to Mac's 1st off. I am familiar with PC's and hardware. So anyway I bout some RAM from crucial. Installed it into the MacBook. I made sure that it was properly seated. Fired it up and when it got to the desktop all of sudden the screen was all messup up. Screen had 1 inch wide top to bottom bars of garbled video. and the MacBook froze. So i restared this time it happen at the apple logo. anyway this went on a couple of times it would happen at different times. I put the apple ram back in and all is well. What's the deal? Is it just bad RAM from crucial.