ok you mean the welcome panel .
i'm afraid the new theme had a template set with it that removed the welcome block.
or it was removed by mistake.
go to Admin CP > Templates > Modify / Delete > Expand [the new theme templates or the default ]> header
revert it to original.
that will remove the customzation of the top links.
in case u wanna save them.
find in that template $welcomeblock
if it's not there
add it below
code:
<div id="panel">
regards
sorry forget all above, later i discovered your problem
it's the text color it's black with a black background
just select with ur mouse that area u will see it