I have reverted back the BIOS to f12. Now everything is ok. My OS is WIN 7 64 Bit, Logitec G110 Keyboard, Razor DeathAdder Mouse, GA-EX58-UD5 Ver 1.0 MOBO. HDD = 3x1Tb,1x2Tb. 6x2Gb =12Gb DDR3 1600 RAM.
I have a a dell inspiron n5010 at first my bios version was A04 then I updated it to A13 after the reboot my system be faster and usage of memory becomes lower (from 31% to 21% for usual usage including internet+music) but i faced a problem after updating bios I tried to re index my systems rating when I re run the widows could not to rate my system! I faced error while indexing!