I've  had some recent problems from a mouse ( rodent) getting in my electrical cabinet.
The computer tried to boot,  but wouldn't  fully boot.
I found where a mouse has been in my cabinet .
There are a couple of chewed wires,  but mostly  pee on some stuff. 
 I'm going  to unplug and re-seat all the connections. 
If this  doesn't  work, I'll  have to set up another  computer. 
I had a copy of my .XML?

 file on a jump drive, but can't locate it at the moment.
If I have to use another computer, how hard will it be to do all the settings?
Will this be like starting over with a new machine?
It's been 10 years since my build.
I have drawings and pin outs, and pictures of everything.  Even several pages of wiring diagrams wire colors,, and wire numbers..
Thanks in advance for any advice.
Hopefully  I can find a loose connection.