OK, so I just today purchased a Dell Inspiron 600m at Goodwill. It showed no signs of wear and tear and it seemed to have all its pieces and parts. I know I know its old but it was only 5$ (It had been discounted because it was old and nobody wanted it, not because it was broken). I grabbed a battery for it in one of the bins (for those who don't know, Goodwill takes the batteries out of all of the laptops they receive and puts them in a bin for people to purchase separately) which was only 1$ and paid for it and left. When I got home I used the power adapter and plugged it in but when I turned it on, the power light, caps lock light, and num lock light glowed for a few seconds, then it just turned off. I can get it to do nothing when it is turned on or off, the DVD Drive does not open, and the num lock and caps lock buttons don't do anything either. If I take the battery out it will not turn on at all, and when I take the power adapter away it will also not turn on. It will only turn on when it is plugged in and has the battery in it. The only indication whatsoever that it has been turned on is the power lights and the caps and num locks lights. Can anyone shed light on the subject of why it is not working. I am willing to buy replacement parts and to fix it myself but I would like to know what is wrong with it before I purchase the replacement part. And I am NOT going to take it to a computer repair shop, that would cost more than what the thing is worth. Any help would be greatly appreciated.