A1342 Startup issues after MagSafe Replacement

I got this laptop from a friend. She said it was dead.

My first thought was the battery thus I have checked and OEM batteries are not available. So I have located a replacement battery and replaced it.

However, after replacing the battery, it would not charge thus the MagSafe/DC-in Board needs to be replaced. The original battery may still be good even though the Apple Store said it 'was swollen' and should be replaced. I replaced the MagSafe/DC-In Board yesterday and now I just get the start up spinning circle (after the 'rebuild' bar underneath it). I let it go for 10 minutes without a complete startup.

I forced a shutdown, re-opened the back case cover, disconnected and reconnected the HD cable, the Optical cable and Keyboard cables. Still no joy.

I also attempted to force a start up using an Apple supplied System 10.5 CD without success. FWIW, after I did just the battery replacement, the laptop DID start up and operated. I tried my charger from my A1181 without getting indication it was charging which lead me to replacing the MagSafe?DC-In Board Board.

I thought I had shut down the machine when I saw it breathing so I lifted the lid and saw it was on the log in screen. But after several attempts I was unable to get the password to type in correctly (it would skip a entry or double an entry, or simply stop accepting entries after 6 letter typed (weird, huh??)).

Should I do the tear down/rebuild again to ensure all cables are properly seated?

Any ideas or recommendations you could provide would be greatly appreciated?

Additional information: A1342 data

2.26 GHz Core 2 Duo (P7550) Intro. October 20, 2009 Disc. May 18, 2010 Order MC207LL/A Model A1342 (EMC 2350*)

Family Late 2009 ID MacBook6,1 RAM 2 GB VRAM 256 MB Storage 250 GB (5400 RPM) Optical 8X DL "SuperDrive"