I just downloaded the most recent version of WAMP server. I am in the phpMyAdmin page, and am trying to set/change my password. The only way I could get into this page from the localhost opening page is by clicking on the phpMyAdmin link, then setting a user name, and leaving the password line blank. All the online guides tell me I should see a tab for privileges, but I can not find one. I do see a link to change my password, and I attempt to make a new password, but I get an error message #1133 "Can't find any matching row in the user table"
What you suggest was the problem I was facing. It would not take my password, and gave me the 1133 error message. I fixed that by changing the $cfg['Servers'][$i]['auth_type'] = 'cookies'; to 'config' in the config.inc.php file. I got some other error messages, but I think I fixed them, but I could not recreate the steps I took to do it.
I successfully installed WAMP several years ago on my desktop, but then stopped using it when the project ended. Since then, I think phpMyAdmin has become much simpler.