Hi, I Just installed an electra ssd, new battery and upgraded to 8 gig RAM from 4. The problem I now have is that my mac becomes unresponsive very quickly. I have to then force shut down by holding the main power button. The installation with the ssd was not very clean and took a while. My concern is that I have have done damage to the computer. I have tried everything but to no avail. Has anyone ever had issues were the mac becomes unresponsive and they have fixed permanently. Its a mid 2009 mac book pro. Thanks in advance.