Upgrade gone bad, please help

[Joseph Koenig]

I have a system that was running FreeBSD 4.3. At the time I built the
system, I compiled a custom kernel, but at this time, I do not need the
modifications I made to the kernel. Turns out I never really did need them.
So, I went to upgrade the machine to 4.9 using sysinstall. All went well,
except when I rebooted, it says it can't find the kernel. It then boots up,
but nothing works. I can log into the system at the physical machine, but no
network connections work, even things such as "top" and "ps" give me 'Out of
Memory' errors. The machine has 1 GB of RAM. I did make a complete backup of
the system before upgrading. I also have my previous kernel. Will it help to
reinstall the previous kernel? If so, how do I do that? Thanks,

Joe Koenig
Production Manager
jWeb New Media Design
joe at jWebmedia.com
http://www.jwebmedia.com/
636.928.3162