I do not have any pata hard drives in my computer. I do have a dvd drive but there is a notch in it so it can only be plugged in one way.
From the moment I turn on the computer the hard drive light is on, if I am going through the Bios or booting from the usb drive.
I found some documentation on where the LED cable should be plugged into so I am sure that it is in the right place. when I unplug the cable the light stays off but when I plug it in the light comes back on. There is never any blinking it is just on or off all the time.
Thanks for you quick replies.