now i knew whats the problem

i tried clear cmos and get post on first time, i enter bios and CHANGE NOTHING , and select save and reboot

then i got no post, the lcd poster shows "EN SETUP", it shows "EN SETUP" when i enter bios and it never shut down even the computer reboot

i tried 0902 bios and 0803 bios, tried putting only 1 stick of ram in 4 different slots, tried plugging only 1 sata hdd

so is my mobo broken?

thanks