For the benefit of all reading this, please post the steps you took to solve the problem.
I first, went into the Device Manager, expanded the Keyboard section, and clicked Uninstall on the Standard PS/2 Keyboard, and I did the same for my Standard PS/2 Mouse. Then, while the computer was still running, I unplugged both PS/2 mouse and keyboard. Then I shut down the PC, while off, I reinserted both mouse and keyboard, then upon entering the Logon screen, both mouse and keyboard worked again. That is all I remember and can say.