Hi Salimeh .qiute face in picture.! The problem is that i can not access bios.Motherboard stucked imediatly after power up or reset.The bios is flashed into a spi memory for intel haswell 4 th generation available though DMI PCH(peripheral board controller)[PCH H81].SPI is between PCH 81 and Flash and DMI(direct media interface)between INTEL Haswell and PCH H81.