try unplugging everything apart from 1 stick of RAM, the graphics Card, and the processor. (i.e. no drives etc).
If it still doesn't work, then remove the motherboard from the case, place on a non-conductive surface (e.g. the bag the mobo came in), and again try with just RAM, CPU & Gfx.
if it <i>still</i> doesn't work, then double check stuff like the clear CMOS jumper is in the right position, and that no other jumpers have fallen off or anything.
Failing all that, it's almost certainly dead.
Epox 8RDA+ rev1.1 w/ Custom NB HS
XP1700+ @205x11 (~2.26Ghz), 1.575Vcore
2x256Mb Corsair PC3200LL 2-2-2-4
Sapphire 9800Pro 420/744