I have a clevo m761tu laptop since 2007. For a month now i am facing this problem: The laptop uses battery even when it's power cable is plugged in (so i have limited time to use it). If i remove the battery it uses power from the cable (but if it disconnects even for a second it shuts down). There is an indicator that lights up orange color when the laptop is receiving power, even when it is powered off. With the battery removed and the cable plugged in, the indicator is ON. If i connect the battery the indicator goes OFF. This happened from one day to another and i still have not figured out why. I did not do any major software change (not that it would matter). The battery is fairly new less than 6 months, and the problem persists if i use the older battery (i changed because old battery was not lasting long enough). The power does charge extremely slow if the laptop is connected and powered off (indicator is still OFF). Takes around 2 days to charge fully. I think that there is something wrong with the charger (but then again why does it work without the battery) or some chip inside that has something to do with the charging just went bye-bye (maybe due to power outage i don't know). I would buy another charger but these things are expensive for old computers and i won't do it unless i am sure that it will fix the problem. I tried disconnecting and reconnecting all cables on charger and it seems OK. It's got a green light that turns ON when when i connect it to power. Sorry for bad english, i tried to describe as best i could. I will update if anything else comes along.