You are not alone in this complaint. It has to do with the motherboard motherboard power on time to when that keyboard radio can get on its feet. Not busted, just a poor design.
the kbrd works fine, only I cant get into setup,the function keys (f2)dont seem to work until after it passed this stage
To get into setup I use an old kbrd, and it works fine.
(Both are ps2)
the mobo is Asrock p4i65g