Hmmm, in that case, perhaps you should make sure the DC-In port on your computer is OK. With the power adapter plugged in and working, try applying a little bit of pressure in various directions (up, down, left, or right, without moving the plug in or out) and see if the light ever goes off. If it does, the DC-In board might need to be replaced. If it doesn't, then presumably it's the power adapter. Justin R. Miller <incanus at codesorcery.net> writes: > I thank you for the information, but I think that in my case it might > again be the actual adapter. This happened both of the recent times at > work, on a UPS with two Intel boxes and a monitor that are unchanged > throughout the day. The problem persisted even at home later that day > (again on an UPS) until I wiggled the adapter wire at the computer end > and plugged and unplugged it a couple of times. Finally the glowing > ring lit up again. > > I will try plugging the wall end in first from now on and see if that > makes a difference in the frequency of this happening. But if I > recall, both times the ring was fine in the morning and then later in > the day I noticed the battery meter ticking and the ring off.