no /boot/loader error 16

[Ben Haysom]

hi

I have an AMD Duron 700Mhz running FreeBSD 5.3.

When I turn it on I get

error 16 lba 287
error 16 lba 287
No /boot/loader

I've found:

http://lists.freebsd.org/pipermail/freebsd-questions/2005-March/081879.html

but the instructions don't do  anything.

Help?