The keyboard is a compaq brand, it uses a u.s.b connection. The computer is a desktop.
When the computer started, I noticed that the keyboard activity-LED
light was flashing. But after I select to boot using graphical mode (by hitting the return key) or using the text mode (by typing "text", yes, the keyboard worked upto this point), then the activity light went off and no matter what do you type on the keyboard, there is nothing showed on the screen.
I do need the keyboard during installation (even for the graphical mode), as there is a step asking you to select a root password. I get stuck in this step.