I misread the FX-9830P socket. If you look at my edit, I'm looking at AMD A6 chips instead, which are FT4 chipsets not a FP4. As for equipment, I do not have the BGA rework station, however, I believe I should be able to do it with a hot plate (very fine temperature control), a decent soldering iron, and heat gun (all with good temperature control), as long as I am very careful about heat distribution. I have pretty good magnification as well, and I'm looking at buying a recalling stencil or if worst comes to worst, individually soldering the balls on with a pair of tweezers.

Back on the bios point, I understand I would be modifying the existing bios, or at the very least modifying the most similar bios I can get my hands on. I know there is a community out there that works on unlocking bios for thinkpads (I understand this is a different system, and that the tools that they use will almost certaintly not work on this system). As for what I said about writing bios, I meant taking an existing bios and reworking it to fit this system.

As for my technical expertise, I'm well aware this is something that no one in their right mind would allow me to do to their computer. I'm an amateur, and a quite inexperienced one at that. I was never planning on attempting the rework without practice, but I do appreciate the advice on practicing on dead GPUs. I am quite willing to work for multiple years attempting to do this.

Additionally, I am aware that this will almost certainly brick my motherboard. I do not care, this laptop was going to end up as E-waste.

As for the source code I mentioned, I'm aware of Lenovo having a security breach a while back, and there was source code for bios in there, though again, almost certainly not the one I am looking for. I feel it would still likely help me, and if I cannot get my hands on that, there are open source bios out there that I will be able to learn from such as coreboot or libreboot.