PC BSD 9.1 not loading after initial install

Question

I just tried to install PC-BSD 9.1 on my Alienware m14x-R3 laptop (with Optimus support), and it refuses to boot. It will come to the bootloader screen, but when I attempt to boot, the actual kernel will get to a certain point and then transfer to single-user mode. There are output errors of a corrupt GPT disk label, although I'm currently using MBR. When using ZFS + path of least resistance, I'll come to a bootloader screen, and when I press default load the system will automatically restart (no joke, it instantaneously kills power and restarts). When I format with ZFS and try to disable APCI support, it goes into boot sequence and then dies from a kernel panic related to ACPI after about 2 seconds. If I format with UFS, the system can get to loading X and then dies while trying to determine loading X. Only once have I gotten to an X window system, and that was when I tried to install PC-BSD without the nVidia driver. Then, it was a blank LXDE screen with a bottom bar. I couldn't launch anything, and clicking was useless. Each time, when I try to press Alt-Fx (replace x with a number), the screen goes black, but still is glowing like it's in X mode. I don't know what's wrong...could it be the corrupt GPT label? Do I need to format my hard drive as GPT? Is it a problem with UFS/ZFS? The system panics when I try to load after initially installing ZFS, saying that there isn't a usable pool/snapshot.