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Windows XP - keyboard not responding
I found old CPU in the basement and its having Windows XP. (in the BIOS Keyboard is working.) On login screen it, keyboard was not working. Then I 1) tried in the safe mode, command prompt mod...
Sounds like XP isn’t consistently loading the USB keyboard drivers on boot. PS/2 forces it to detect input properly. I’d keep the PS/2 plugged in just in case. Also, try uninstalling/reinstalling USB drivers from Device Manager while both keyboards are connected. XP’s USB support is flaky, especially after reboots.