after installing a new module site simply is not working

[AngelFromRussia]

after installing a new module site simply is not working. Do not open .. What to do ?? How do I delete everything on which depends the site?
Thanks

[velden]

You should give way more information.

Though one hint that might get you up and running again: rename the folder of the module you just installed:

for example /modules/modulename -> /modules/_modulename