my maximus have a new issue

Power up after power loose dont work anymore ,...
if overclocking faild the board dont start automatically again,...
it start for < 0,3 second and than shut of so i allways have to press the power button now ,.. flash back to 505 don´t help ,...
have to rma the next maximus

but i wait 2 weeks to get the new revision from my hw dealer,...
regards
the Maximus killer