So I recently upgraded my late 2009 2.26 GHz Intel Core 2 Duo Macbook to 4 GB of OWC DDR3 1067 RAM. I had never done this before, but it seemed to go without issue. I started it up and everything seemed fine. The next day it crashed, a kernel panic, I believe. I ran a memory test and there was a problem. Then it crashed again. I reset SMC, did not help. Now, however, it takes forever to load. It will get to a blue screen and sit there for 5+ minutes. So, I took out the memory and put in my stock 2GB. It took forever to load, but I ran a memory test and it seemed to pass. Only, now there is no sound. Under system preferences, it says "No output devices found." What could be the problem? Did I ruin something installing the RAM? I've run a search for these problems, but nothing has helped. Thanks so much..