Dell optilex 755 Yosemite 10.10.2 Slow boot

[emialecs2008]

Hello. Could enyone help me to make my Dell optiplex boot faster. It takes about 2 minutes to boot up. I use niresh distro updated to 10.10.2 and i hahe clover bootloader. The only way to boot up was not selecting anything at customization (clover bootloader). One its boots up it runs perfectly. I use my own DSDT extracted from aida. no paches was applied. This is the video uploaded on youtube is called Dell optiplex 755 Yosemite slow boot. I use -v so you can see what happens in verbrose mode. Any help would be apprecieted.