Asrock p4 m/b`s and celeron support

so far i`ve tried a P4VT8+ and a P4i45E and neither work with my 400MHz
celeron
cpu. the P4VT8+ only supported Prescott 800MHz chips (not stated on the
website i bought it from and only stated in the cpu support list on ASrock`s
website) and i checked the Asrock website for any evidence that the P4i45E
didn`t
support the celeron 400MHz chip and i could find none. So, psu works fine,
ram is fine, gfx card fine, cleared cmos. I tried to power up the P4VT8+
@800MHz with 400MHz chip in but didn`t get anywhere. no post, no nothing. If
nothing happened is the celeron still working?. looks like rma city for me.
send it all back and
get a good reliable amd system instead. at least they do what the m/b maual
states they do.. :-(

TIA