I have an intermittent issue here, I have a user whose PC makes a humming/beep noise when you boot it up. It happens right when it tries to find the keyboard, when I unplug the keyboard it goes away. It said keyboard failure, So at first I thought it might be a bad keyboard or PS/2 port, so I gave her a USB keyboard, but after awhile it happened again. Then I thought it might be a bad motherboard or power supply, so I gave her a whole new tower. I also swapped her UPS with a brand new one. Her machine is a DELL Optiplex 270 with windows 2000. Also, sometimes while she is in windows all of a sudden she is not able to open anything up, when she double clicks it nothing happens, for example, My computer on the desktop. Then when you restart the PC you hear the humming/beep noise. It does not stop unless I unplug the USB keyboard. What is going on here? After everything I did I am hoping it does not come back, but if it starts to happen again, could it be a bad current or voltage level going into the machine? Any Ideas, feedback, or help would be greatly appreciated.
Edited by Pete G, 08 October 2008 - 08:54 AM.