I'm an enthusiast PC builder with no usable vision, and I have noticed a very serious problem with ASRock boards after using two of them. I have a third on the way for a PC I'll be selling, so I'll keep you up to date with the results of that board if I can remember to.
The issue at hand: ASRock boards have a firmware flaw that interferes with screen reader softwares' OCR results, the mouse pointer, and even the way websites display. In short, the board does something to keep OCR from having focus in the window which you try to use it, making it virtually useless. Instead, it seems to linger around the desktop, and if you click something with OCR you will be kicked either to the news widgets or the desktop instead of what you were actually aiming for.
As for how websites display, it's a little weirder. A good example of this is the Student Clearinghouse website which I had to use another device for since I can't get the window to focus. I'm aware that you have to change the page zoom sometimes, but even that didn't work. The login button just wouldn't show up, but I don't know the exact logic behind it.
Furthermore, I have noticed that when scrolling in the file explorer or similar lists, using page down and page up to scroll faster results in much, much smaller steps. Instead of scrolling twenty-five or fifty items at a time, the ASRock boards will only scroll three or five.
Finally, I have noticed that certain text fields require much more scrolling to get the entire contents. For example, the NVDA add-on store description box shows ten to fifteen words on other board manufacturers, while on the ASRock board it only shows three or so.
The boards I have already tested are a B850M Pro RS Wi-fi and a Z890I Nova Wi-fi motherboard. The board on the way is a B850I Lightning Wi-fi. Other boards tested are the Gigabyte B650I Aorus Ultra, the Asus ROG Strix B850I, and an MSI B550 ATX motherboard which I sadly can't remember the model number for. None of the other boards had these issues.
I have tested with integrated graphics and no dummy HDMI, integrated with the dummy, dedicated without the dummy, and dedicated with the dummy. Results are consistent in that the presence of a GPU or not have not changed the results at all on ASRock boards and that it worked fine on other boards.
CPUs tested were a Ryzen 5 7600X, a Ryzen 7 7700X, and an Intel Core Ultra 7 265K. The new system will have a Ryzen 5 9600X. All of these CPUs do have integrated graphics.
GPUs tested were an NVIDIA RTX3060, an AMD RX6750XT, and an NVIDIA RTX5060TI, plus the Radeon graphics that come with the AMD processors and the Intel graphics that come with the 265K.
Different BIOS versions were tested too. Updating the BIOS on all of the boards changed absolutely nothing.
One final point I'll make: ASRock's software is a complete dumpster fire from an accessibility point. Where Asus's Armory Crate is pretty accessible and Gigabyte's software suite is somewhat accessible, ASRock's software shows absolutely nothing on screen and is virtually impossible to make accessible due to how the software was created.
The sad part is that I really like my current Z890I Nova Wi-fi board for the rich features, quiet VRM fan, and good price. Unfortunately, I believe I will be moving away from this board to the MSI MPG Z890I to avoid these issues. It really is a shame.
Ask me anything! I hope this helps someone out there :)