Both livecd and bootcd stops at "Detecting hardware..." screen

i have tested r36775, both livecd and bootcd, in real hardware.

Both of them stop at "Detecting hardware..." screen

I dont know if system is hanged, Ctrl+Alt+Del hotkey doesnt work, but if i press power button, system shuts off, no need to push it for 4 secs, as i have to do when system hangs

My motherboard is this --> http://www.asrock.com/mb/overview.asp?Model=939S56-M&s=939

2 Gb RAM installed
HDD IDE 160 Gb
nVidia GeForce 6600 graphics card
AC97 sound (card/driver)

No debug log, as it stops before reactos is able to get that output