hi i have an unusual request i have modded my bios and revert back to original(i.e. when i start my pc it showed dual bios and other options such as press f10 or any other no to boot in safemode or use xpress recovery ,etc.) my motherboard http://www.gigabyte.com/products/product-page.aspx?pid=3268#ov my motherboard bios http://download.gigabyte.cn/FileList/BIOS/mb_bios_ga-ma74gmt-s2_f10.exe the file from which i modded :- View attachment GBT_V2.1_Cert.zip other bios information :- i also tried to revert back using View attachment GIGABYTE-GBT-2.1.rar but it failed .i am not able to get that particular screen which i used to have at system startup.(i have modded my bios first time).is there any thing such as system restore for it??? i would like to inform you that i have a back up of bios created from a software called @bios(you can see in attachment above).will it be of any use???