At each point in these instructions, check to see if the problem is fixed. If so, great! Otherwise, continue.
#1045 - Access denied for user 'root'@'localhost' (using password: NO)
C:\wamp\apps\phpmyadmin3.5.1\config.inc.php
file, changing $cfg['Servers'][$i]['extension'] = 'mysqli';
to instead be= 'mysql'
This is convoluted, I know, but that's what worked for me. Some posts may say you need a password in the config file, but you don't. Mine is still ""
Hope this helps.