Dell c600 Latitude won't power on

I just got a dell c600 latitude. Yes it's old but it was free and I only need it for internet. It had no battery and no cd drive. Not worried about the drive but I did buy a new battery. It wouldn't power on with just the adapter or the battery. I did some research and I removed and reseated the harddrive and the memory but still nothing. I'd really like to use this as a second web browsing computer. Can someone help?? :(
 
We paid 40 dollars for the battery and need to get this figured out without paying a fortune for a repair person to simply look at it and tell us what it is.
 
Back