With those alot of times the power supply goes and takes the motherboard with it(nice). That's an AM37 MB made by FIC. You'll need that board or one made by FIC because the OS is licensed to that hardware setup. I bought the same machine in the same state, replaced the power supply and MB fired it up and it said the license was no good. Called Emachines and they told me sorry nothing they can do. Fortunately for me I have a few copies of XP.
I put
this board in and it runs like a champ. DVR on the cheap!