DH67BL won't boot up after bios update

Hi guys

i updated my DH67BL mainboard bios version from blh6710h.86a.0062 to blh6710h.86a.0160

but after rebooting the MB won't start .

I tryed everything they wrote on the guidelines

(Clearing CMOS , removing battery , flashing new bios by USB or CD )

anyone can help me how to fix this problem

thanks in advance