rebooting didnt help. ;) what additional information do you like? tried installing manually, via cpan, ppm.

any kind of information , but details, not summaries

anything that would help someone reproduce the problem

for example, figure out which test causes perl.exe stopped working,
what modules and dlls it loads Devel::VersionDump, %::
figure out which line in the test causes it (Devel::Trace),
attach a debugger figure out which dll's are loaded at the time,
figure a way to get more error data from windows that the generic message -- eventvwr? windbg? depends? something something
don't forget to rule out resource limits if you know how, and ... stuff like that