Try one of the tricks in Resetting_Your_Password.
The exact same thing happened to me. I managed to change it via phpMyAdmin.
Just in case there’s any developer willing to check this bug, this happened to me while trying to install a fresh wordpress 2.3 in my own server, which run’s on WampServer 1.7.3 (PHP 5.2.4 and MySQL 5.0.45)
the nice thing about wordpress is if you give a valid email address when installing, it does you the courtesy of mailing you your password just in case you have the memory of a goldfish, or something like this happens.
I just tried installing a brand new 2.3, and the identical thing happened – i.e., a screen with only the wordpress logo comes up, with no password, etc. Since I am fairly new to wordpress (certainly to 2.3), I was mystified, and wasted a bunch of time. (I fixed by manually entering a md5 hashed password into the db, but this was a hassle, needless to say). (BTW, I never got an email….)
Shouldn’t this be filed as a bug?
Anonymous User 269521
(@anonymized-269521)
I found the solution for my occurance of this error to be server memory allocation related. Saw this in my logs:
PHP Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 92160 bytes) in [path to WP]/wp-admin/includes/upgrade.php on line 250
So I went to /etc/php.ini and changed the line:
memory_limit = 8M
to:
memory_limit = 32M
Once I did this I had to reset Apache (“/etc/rc.d/init.d/httpd restart”),
and then boom, “Welcome to the famous five minute WordPress installation
process!” (Okay, there was no boom; that was for effect).
I’m not sure why I had to reset Apache for this change to take effect, but I’ve learned not to question such things.