Let me pre-empt anyone who is quick to jump to the process of "reset PRAM" as the answer to the title. Been there, done that. Didn't work. So let me set up the situation (read: long story) before I get to my problem. Part 1 I am the proud owner of a MacPro3,1 that I bought second hand and have owned it since 2013. The machine came originally with the HD2600XT (DVI). I swapped in a Radeon 6870, not flashed, and also purchased an Apple LED Display (miniDP, not thunderbolt). The 6870 crapped out on me and I saw it as a sign that I should go and find a GTX680 and flash it so I can see the boot menu. But in the meantime, I plugged the HD2600XT back in first, found an old monitor to plug in because the Apple LED Display did not have DVI. Part 2 Additionally, I thought it would be a great idea to start fresh and go with a new OS install. I was on Yosemite, capable of upgrading to El Capitan. But I decided I wanted to see how much further I can push this computer. I found dosdude1's Sierra patcher tool for unsupported Macs and I installed Sierra without any issues. Then I found dosdude1's High Sierra patcher and installed using the new APFS system (the OS was on a SSD). All was well thus far! Dosdude1's instructions warned that since there would be no recovery partition for APFS, it needed some additional post-install work as well as log/verbose during the bootup. I didn't mind it not having the clean bootup screen, and so I endured. Part 3 I then found the right seller for the GTX680, plugged her in to slot 1 while the HD2600XT was in slot 3. I did not have access to another PC that would allow me to plug in the GTX680 to be flashed so I chose to install Windows10 on a completely separate HDD and have the Mac Pro boot into it (I dug up an 80gb HDD sitting in the basement! Yes 80gb!!). I had been troubleshooting various hiccups running bootcamp and was not able to install Windows at all. This was done while the HD2600XT was plugged into the old monitor and the GTX680 being plugged into the Apple LED Display. Part 4 I then came across this helpful article and by following it line by line everything worked beautifully. Flashed the GTX680 and the boot menu is all visible. So what's the problem, you say? Well, somewhere within Part 3 above, I went from seeing a native resolution boot menu with all the verbose logs to a low resolution large icon, large verbose text. From all my Google searches, "mac boot menu wrong resolution", all the solutions pointed to reset PRAM, and so I did ..... except it did not resolve the issue for me. Ok, so I thought maybe towards the end of Part 2 above while I was trying to figure out how to install Windows I goofed up something on the macOS drive. So I decided to wipe the macOS drive and re-install High Sierra using dosdude1's patcher. That clearly didn't fix anything either, because here I am starting this long winded post. Aside from the bootup not looking elegant, what bothers me more is that any finder windows or apps that I might have had open prior to bootup always gets resized to a tiny footprint in the bottom left corner because of this resolution issue and I have to resize all my windows after it's boot into the OS. I thank those of you who read this entire post and hope someone could help with my issue. For those who are curious, my last post on these forums was probably a couple of years ago, i normally lurk and read and try to do everything on my own. I wouldn't be posting if I weren't really stuck :/ edit: Another issue I forgot to mention is that at the boot menu, the macOS drive is actually named "EFI Boot" instead of my HDD's name, "macOS". I didn't think that was normal either. Is there a fix for that too?