I have Intel Core i5 2500k with GA-Z68-APD3 rev. 1 with Bios F3 with Nvidia GTS450 GS (1GB) with Hitachi Sata 1Tb.. with cooler master cabinet. recently I have installed Windows 7 64bit Ultimate... and download new easy tune from Gigabyte website.. and installed. when I run it shows me 1, 2, 3, 4 options of overclocking.. when I click on 1 it ask to Restart pc, Restart Later or Cancel. If I click on restart then Easy Tune become not responding and close.... I can not overclocking my pc... please help.....