gigabyte ga-990fxa-ud5 rev. 3 some bios settings not accessible !

Aug 14, 2013
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Hello everyone i got an 990fxa ud5 retal version and it had some issue so the store i bought it from replaced it with a ga-990xfa-ud5 rev. 3.
The problem is that i cant make changes into the bios which is with mouse enviroment (FB) i cant change cpu features nor Ram i press the button that is "auto" and no other option appears...
I dont know what to do if someone has the same model plz if he/she could tell me or send me some pics of the settings because i cant setup my fx 8120 and the c ores are not working as i would something weird with the core per unit staff.. And according to RAM i cant overclock them above 1600 cause i cant change the settings..