I changed my main board, cpu,
MB: Z97X-UD3H-BK (Black Edition)
CPU: core i7
I reinstalled every thing from scratch, Yosemite & clover boot loader ( the last version r3259), used the original config.plist that came with clover.
Installed the sound driver from [url="http://www.insanelymac.com/forum/topic/279450-why-insanelymac-does-not-support-tonymacx86/"]#####[/url] (Yosemite): Realtek ALC1150.
Followed this thread for iMessage: http://www.insanelymac.com/forum/topic/302347-clover-imessagefacetime-fix-for-yosemite/
( Selected iMac in the magic wand section )
and every thing is working now