Error 1 lba 376560 No/Boot/Loader

[sirconsole]

Hello i have this configuration:

ASRock K7VM3 Bios Version 3.31a
256MB / 166Mhz DDR333
AMD Duron 1800Mhz
Ethernet PCI SIS
Ethernet Wireless N PCI TP-Link TL-WN851N
USB PEN Driver 1GB

Install with pfSense-1.2.3-RELEASE-LiveCD-Installer.iso
The installation  complete Successful

This happen wen computer restart.

Error 1 lba 376560
No/Boot/Loader

FreeBSD/i386 boot
Default: 0:fd(0,a)/boot/kernel/kernel
Boot: _

i re-intall and check Package Mode and same problem