I had few databases related to different projects in the WAMP. I don\'t know what happened, Today, when I go to PhpMyAdmin, I was just able to see the default databases and rest
Another method is to utilise Window's "Restore previous versions" feature. Right click the wamp folder (usually in C:\, click Restore previous versions and select the most recent date you know it was working.
Note: This will also revert mysql data - so you'll lose any changes after the date you select, but I have used this in the past when I needed to get my whole wamp system back to a working state when something had broken it.