Is there anyway to reinstall my OS without formatting?
Use floppy boot disk type a:\deltree c:\*.*
it will ask you a question before deleting anything. well say yes to anyfile[not folder]
on drive C: include your system file [ io.sys, command.com, etc] also say yes to c:\windows
and say noy to anythng else unles you want to delete it, I'd delete c:\Program Files too.
It works unless you use NTFS format. And then you can easily boot your CD installer and reinstall the OS.
you still need to reinstall all of your program though.
Another choice you can try, say yes to delete any files on c:\ but not the c:\windows.
Try to install the OS after that, if you are lucky you don't have to reinstall your programs.
But first, before you try those to above just simply try to put the new mobo in, you may have a surprissed that you don't have to do anything others than wait for the computer while it copy new driver for the system.
gluck with your project