SN45G no boot?

I'm building an SN45G based system, and have instantly hit a problem.
System is ;

SN45G XPC
2x256Mb Crucial PC-2100
XP1800+
20Gb HDD
AOpen CD writer
MSI GF4 4200

Having built the system up, plugged in, I get...nothing. No VGA, no
beeps, no POST no nothing. There is no floppy drive, but I don't think
that should stop it posting. The CPU was in my other system until last
week and working fine, and I guess even duff RAM or HDD would still
let me get to a POST screen before causing problems?

Hitting reset seems to reset, the LAN light is on, some green light on
the mobo and the CD drive opens etc, so there is some power. Am I
missing anything obvious? I'm hoping the damn thing doesn't need
returned, since I need to take it apart.

Thanks for any help,

John Wallace <moa_dib.DeleteThis@home.com> wrote in message news:<h698jvckshsoo5e5uft742tpejelcbcvua.DeleteThis@4ax.com>...
 > I'm building an SN45G based system, and have instantly hit a problem.
 > System is ;
 >
 > SN45G XPC
 > 2x256Mb Crucial PC-2100
 > XP1800+
 > 20Gb HDD
 > AOpen CD writer
 > MSI GF4 4200
 >
 > Having built the system up, plugged in, I get...nothing. No VGA, no
 > beeps, no POST no nothing. There is no floppy drive, but I don't think
 > that should stop it posting. The CPU was in my other system until last
 > week and working fine, and I guess even duff RAM or HDD would still
 > let me get to a POST screen before causing problems?

Start by removing the CD, the HDD, and one of the memory sticks.<!-- ~MESSAGE_AFTER~ -->