anyone ever brought back a USB port? I keep getting an alert message saying that a USB port was drawing too much power, and it has been disabled. I decided to remove the logic board and clean it. So I did, I tried to wipe it down with alcohol and Q tips. And then I used a can of air to further blow out the dust and dry the alcohol. After plugging everything back in, it was completely dead. I rechecked everything and it turns out the keyboard cable wasnt in correctly. So after sliding it in and latching it, I tried again. And nothing. So I was sitting there dumbstruck and after what seemed like forever, I heard the fan come on hard for about a second, then off. And then the bong and it started booting up. Yay! The memory seemed to be working fine. But I kept getting freezes forcing me to power off and reboot. Along with the USB port shutdown. I decided to check the iStat widget, and the fan was zero and the cpu was 70 degrees. So I think it was overheating and freezing the cursor. I unplugged the fan a couple of times and it was the same. I let it cool off and then tried an SMU reset. And this fixed the fan, which seems to have fixed the screen freezes. Now back to the USBs. I decided that I could live without one of the USBs. So I decided to try the unix command to shut off the error message. From the terminal, I tried this: sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.UserNotification and it didnt work. My terminal rejected this command string. I was just entering this at my user prompt in the terminal. Im not too familiar with unix, so maybe I was at the wrong prompt. Or something So, I may troubleshoot the USBs if anyone has anything to try. Thanks.