questions about the green and red light on front of computer.
Posted on 2011-09-05
I have an older XP machine that had to be replaced due to the symptoms of a bad mother board or hard drive.
I have one program I need to get done with and then I won't need this system again.
It has come on fine the last 4 times I have used it.
When the power button is pressed the green light comes on, and the red light begins to flash = booting.
Today, however, the red light just goes off and on, one time, and that tells me it is not booting up. So, I hold the power button in until it cuts off and the green light goes off. Then I try to boot again and still the red light won't keep blinking.
The holding in of the power button to cut it off, was getting old. So, I just pulled the power cord out from the back.
The green light "stayed on."
The power has been disconnected.
So, I plug the power cord pack in and the green light goes off and now won't come on at all. (??)
Holding the power button in until the green light went off, was my way to know it was off, so I could try to turn it on again. Now, my only indicator is the red light.
5-6 attempts and the red light won't stay on, which tells me it is not booting up.
Now, it may start fine tomorrow.
So, what happened with the green light?
Why did it go off when the power cord was plugged back in, and why did the green light stay on when the power cord was removed?
Also, what is the button near the power cord on the back that has a "o" and a "-"
It seems not to affect anything, whether it is on or off.
(o = on ? )
( - = off ?)
o appears to be off.
Now I notice there is small black push button between the larger silver plated on-off button for the computer. This black button is located above the main on-off button, and below the red light. The green light, which no longer comes on, is above the red light.
What does this small black button do?