Thank you for the help
I've tried the battery trick it twice but no joy yet. It did something though: Usb2 hard drives now work on the Usb3 plug.
However the Usb3 hard drive powers on, but does not show, not even in disk utility. It does work plugged on the Usb2 plugs. In Windows, Usb3 works properly. Weird.
What works: sleep, function keys, display brightness, sound, microphone/headphones, wireless, Usb2.
What does not work: Usb3, bluetooth, keyboard backlight and ethernet. (Keyboard backlight and ethernet don't work in windows either; recently I made the mistake of replacing the motherboard with a used one, and lost them as a result...).
I'm still trying to get the trackpad gestures to work—need to go over it again to make sure I;ve done it right. Not wrking at the moment.
I have standard bios 205, using the WithoutPMpatched kext that Jeff provided. Should I switch to his bios?