Matsonic mobo only boots once without reset... ?

Archived from groups: microsoft.public.windowsxp.hardware (More info?)

After a series of unfortunate events, my machine is now up and running
with a matsonic mobo # ms8308ep(266)

Installed winxphome, did the activation thing, all is well except... I
can only boot once without a strange problem. Try to restart, and I
cant get past the windows loading screen.

What happens is this... windows xp starts to load, the little bar
scrolls across 2 or 3 times, and then the video goes out. PC seems to
be loading, can't tell for sure cause ctrl+alt+del does nothing, so I
dont really know.

Anyway, here is the clue: if I reset the bios (with the jumper by the
cmos) I can boot again - once - just fine. I get the bios warning "CMOS
memory size wrong" and a choice for F1/setup or F2/load default and
continue. But F2 does the trick, windows loads perfectly and I am in.

However, if I restart, I go back to no video once windows starts to
load.

I can boot up in safe mode no problem at any time. But I can only get
back to windows if I reset the CMOS (jumper).

This makes me think it is something in the bios... but what? What could
the setting be that would cause this???