GA-VM900M (rev. 1.0)

Hi can you please help me unlock all overclocking settings for my motherboard, my cpu multiplier is stuck at 12X and I'd like to make it more I'm using a E4600 processor and also can you add a custom splash screen please

-bios version is- F5
-bios link- http://download.gigabyte.ru/bios/motherb...00m_f5.exe

Splash screen image link if possible-
http://www.hdwallpapers.in/walls/crysis_game_hd-HD.jpg