Motorola Defy Not Turning On
First you need to have RSD Lite installed. Do a Google search and look for either 4.9 or above. Then you need to go to Motorola's site and install the drivers needed. Find an SBF file that will work for you, likely it will need to be a 2.2 file. Best thing to do is keep trying until you find one that works. Boot your phone in bootloader mode (volume up button) and if you get a message about a low battery you will need to find a way to charge up the phone. Go to the XDA developers forum and search for McGyver battery fix. (you can also find sbf files there) If RSD lite recognizes your phone flash the sbf file and let it do it's thing. More detailed instructions can be found on XDA as well, but that is the jist of what you need to do.