I got a Macbook 2007 era Intel 2 Duo. I got it with SL and its been nothing but trouble when I try to update. Don't want to talk about the 1st time bc that was hell for one week trying to fix it. I just had it since off to this shop and they fixed it and reload the OS. Well I guess they did not fix the problem completely. I try to download Lion and it would not install correctly. I did it a few time more and finally it worked. The problem came when the computer reset it self and keep getting errors during the installing process, so I installed once more. Nothing. Same error kept popping up. So then i try to re-install SL with the CD...a bust...nothing. Try to do it from a USB...NOTHING! It kept saying my HDD was locked I completely reformatted the HDD and try to reload SL once again...everything worked up until the last part the screen goes brown...-____- So i formatted the HDD again and nothing no SL no Lion *rawr* I looked everywhere on what to do and i done everything I saw and nothing has worked. I really don't want to pay $70. Ne suggestions? and please be gentle thanks guys. Hope to hear from yall soon.