Help Flashing BIOS

[kyleplum2009]

I have never flashed a BIOS so need some detailed instructions. I am trying to install the newest BIOS for my ECS board a790gxm. Here is the download page

http://www.ecsusa.com/ECSWebSite/Downloads/ProductsDetail_Download.aspx?detailid=901&DetailName=Bios&DetailDesc=A790GXM-A(V1.0)&CategoryID=1&MenuID=39&LanID=9

I have not gotten very far after downloading the file. What do I have to do next?

I have an external hard drive that can be bootable. There webaite has instructions, but not very thorough.

 

[kyleplum2009]

Now my computer will not boot at all after doing the proper BIOS update.