Bob Day wrote:
Test the modules yourself. Download Memtest86+ from
http://www.memtest.org and run it. My guess it you'll start
getting memory errors right away. If that turns out to be the
case, buy name brand memory such as Crucial, Kingston, or
Corsair. You might use Crucial's memory configurer at
http://www.crucial.com to see exactly what modules your
computer needs.

-- Bob Day
http://bobday.vze.com

How can I test the apparently bad module if I can't get the computer to
start with that module in the slot?!

As far as seeing "exactly what modules" my computer needs, re-read my
original post. It clearly states what modules my motherboard supports.