i've already tried to move the DDRAM stick
to another slot : same results .
I tried 2 differents 300 PSU : same results .
The system only boot at 133/133 since i change the L7 bridge , so i suspect that it's a power issue due to mobo voltage regulators (hoping that this sentence have sense in english ;)).
I have noticed that even if the system is now booting properly at 133/133 .
Some games like MDK2 are hanging after few seconds .
If i restart the system with 100/100 the games are running fine .
I guess the mobo is not able to handle the 133/133 FSB as my memory sticks are all PC133 or PC266 certified .
I'm gonna bring my mobo back to my local PC dealer tomorow .
i really begin to ask myself why i bought this mb instead of staying with my old good BX board .