I have an old HP xw8400 workstation. I didn't remember the power-on password I had set for it. So I unplugged the computer, took out the CMOS battery, and left it out for over an hour. But the system still asks for the power-on password.
I even tried rebooting without the CMOS battery altogether. There was no difference. I was still asked for the power-on password.
I have read that usually it is enough to take out the battery for 10 to 15 minutes. Why is this method not working in my case? (Yes, I am certain I am taking out the CMOS battery. It is flat, round, lies between the two graphics cards, at a location that corresponds to all the pictures I have checked on the Internet.)
Can someone please suggest what I should do?
This is a typical example of the advice I have been following: