I am a bit unsure of where you are right now because of the different issues you have reported and not exactly sure of what you did with the "backup thing"
Presuming that your bios and mobo have some sort of backup so that you can get your old bios back, then i would imagine you are at some sort of hardware impasse, but i am not 100% sure on that.
One way to find out would be to remove any hardware that you have on your pc that you absolutely dont need. Also go into your bios and see if there is a "minimum or default setting" and go for that. Dont go for maximized or optimum setting, go for the one i described, min or default setting, see if that helps you any.
I have to admit i dont really have any experience with lanparty mobos, although i may not need to to help you out.
One question. Was all running fine before you tried installing that bios update or were you have some issues at the time and hoped that a new bios install would help you out? Usually a new bios install wont help and will make things worse or no better, unless the new bios is for a new cpu or other piece of hardware. It might be helpful to find out why you did the bios upgrade. Of course, its possible you just decided to give the new bios a try on a whim, not like we all havent done that, lol, even though its not really always a wise move.