Migration of WordPress sites to a local WAMPserver, now the pages cannot be found

Recently at our agency we needed to do a serious overhaul of our servers, so I’ve had to migrate the sites onto a local host machine so that I could work on them in the meantime. I used WAMPserver to host the sites, and the sites are powered by WordPress. When the move was complete, I checked the sites on my local host to see how they looked. The front pages looked perfectly fine, but whenever I tried to navigate to the inner pages, I was met with nothing but 404s. My supervisor believes it might be connection issue, but I wanted to check here first to see if anyone else had similar problems.

OS: Windows 7
WAMPserver version: 2.2

Steps already taken

• I made sure that the local databases were named exactly as they were on the original server, and I double-checked with the wp-config file.
• I made sure to obtain the SQL files for the databases and imported
  them in phpmyadmin.
• I went into the SQL files and changed all of the links (changed all instances of http://www.sitename.com to http://localhost/sitename)
• I logged into the WordPress admin dashboard to check if all of the content was actually there. Everything was intact, but even clicking on “view post/page” on each individual post/page resulted in a 404.
• I tried returning the permalink options to default and then changing them back, but that didn’t work.

Unfortunately, I cannot provide any more information as I am no longer in the office. I hope that I can receive some help by the time I go back in tomorrow morning.