Unable to access WordPress Site: dead link – redirect loop error message

Hello,

I am the new creative director on a site for our client, Pacific Vision. The admin info is below. The link to access gives a redirect loop error message. How can we resolve this? Our client is asking us to change some of the content in the staging we shared ASAP – and we can not access to do so. Please advise!

Brooke Murphy, Creative Director, HORN
[email address moderated – these forums do not provide support via email]

Version: 3.4.1
Table Prefix: wp_pvi
User: [redacted]
Pass: [redacted]
http://new.pacificvision.org/blog/wp-admin