USB ports problem on modified mac mini late 2006 - El Capitan install
Hi all. I have been updating my late 2006 mac mini. Changed for an SSD, made an efi upgrade and added 4GB of RAM, changed CPU to a T7600. Succeeded in running OSX Lion smoothly. And tried to install El Capitan. It looks like it is installed properly but I can't really tell, I can't pass the password screen of the session : my bluetooth keyboard is not recognized because I didn't have the chance to have it synchronized with this computer under this OS, and when I plugged a USB keyboard, I realized all USB ports are not running (they are are the beginning of the boot, but then not when the system loads). Any idea how I can fix this ?
I have 2 OS installed in different partitions on the macmini : this El Capitan stuck and I can boot to a working Lion (if need to make changes to files in the El Capitan partition).