Hi all, I dug my old Mac Pro 1,1 out of storage, and found that I could use standard PC GPUs in it. I've been using an EVGA GTX 680 2G in it for a few weeks, but the lack of a boot screen can be frustrating at times, and I see that it's only running at 8x PCI speed. Tried flashing it as per the instructions found here http://forum.vrayforc4d.com/index.php?threads/13946/ to no avail. GPU-Z now reports UEFI on the GPU, and NVflash says that the right ROM is on the GPU, but I still get no startup screen! Any help would be appreciated to alleviate this, I've run out of ideas, and it doesn't seem anyone else on the internet has had this issue! Thanks.