Won't boot

I used Unibeast to setup a Yosemite USB flash drive, it wouldn't boot, giving me the error message Boot Failed, i messed with BIOS Settings and got it to say some other things and sometimes it would just jump back to the boot selection screen. Couldn't figure it out so i decided i would pull out an old laptop i had lying around that has a newer BIOS and Motherboard, bam it booted into the boot loader, not issues at all. So my question is why won't it boot on my desktop, is there a BIOS setting that might be stopping it? my system is

Intel DG41TY Motherboard

4GB DDR2 800 Ram

Nvidia 9600 GSO

formatted 250GB HD

Not sure what type of BIOS it is, and doesn't give me a lot of options to set it up, it has some things i thought might be incompatible but I'm not sure, XD which is enabled, UEFI is enabled but when its disable i can't even see my USB drive in the boot settings, HPET, and some other things i can't think of off the top of my head. If anyone can think of why it won't boot and let me know. Please help me i really want to get OS X setup on my desktop! I am starting to think it has something to do with my motherboard or bios settings. But i can't for the life of me figure it out or whats causing the issue

Okay so i was finally able to get into my USB flash drive with UEFI disabled, it didn't give me the Boot Failure, instead i just saw a underscore flashing, nothing else. I then installed Clover boot loader onto another blank USB, restarted my PC let it boot into that, booted into the Yosemite Unibeast USB i created and bam, i was able to get into the installation and install. Right now it is installed! Fingers crossed i won't have any more issues! Good thing to note is i have full resolution!