asrock motherbaord bios

[PanzeR_1987]

"asrock 4core dual vsta"

while in the bios i cannot get it 2 stick to dual channel memory altho i have to stick of ddr memory in the ddr slots (1 521mb and 1gb)

any ideas?

another problem would be that i cannot boot into safemode/windows xp cd/ any other bootable application.

 

[!TIMMY!]

I think u need 2 stick that are the same size e.g. 2 x 512 or 2 x 1gb.