I'm using USB2 though. It has no PS/2 ports because it's a server motherboard. Also I'm pretty sure this server was made around 2008.
Assuming this is the Windows 10 "System One" described in your Computer specs, your Intel Xeon E5-2430 CPU does have Vista-compatible "Sandy Bridge" microarchitecture, and your keyboard has wired USB 2.0 Type-A connectivity. Are the USB receptacles blue with initials SS (USB 3.0)? If not, then I don't really know what the problem is (although an old wired mouse might be worth a try). Hopefully someone who has had more experience with clean installs of Vista on various hardware will reply. Be advised that software support for Vista - particularly browsers and antivirus - is almost nonexistent.
This is indeed "System One". As I said, the USB receptacles are USB 2.0 (they are black and windows has usb 2.0 controllers). I have a PS/2 to USB adapter, if I use that and plug in a keyboard and mouse into the computer with it, would it convert the signal so it sees it as a usb keyboard and mouse, or would it see it as a PS/2 keyboard and mouse?
UPDATE: Just tested it with an adapter and a PS/2 mouse and keyboard. Not only did I experience communication issues with the keyboard and mouse in the bios and OS which showed up in the bios event viewer, (the keyboard would randomly stop working, requiring a re-plug, and the mouse movement would be very stuttery) but it also didn't work! It's like the USB ports just turn off when the Vista installation media loads. Note, that this happens right when it loads, while it is loading files the keyboard and mouse still work. I have also failed to find any help with this using google. I might also note that I get this same problem with Windows 7 installation.
