White screen after 7.6.2 installation attempt

During initial installation of 7.6.2 DB certification did not seem to complete. install.log -

2016-05-12 14:27:21…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 16:16:52…Begin System Check Process *************
2016-05-12 16:16:52…XML Parsing Support Found
2016-05-12 16:16:52…MBString Support Found
2016-05-12 16:16:52…ZIP Support Found
2016-05-12 16:16:52…/custom directory and subdirectory check passed
2016-05-12 16:16:52…cache directory and subdirectory check passed
2016-05-12 16:17:02…/module directory and subdirectory check passed
2016-05-12 16:17:02…/upload directory check passed
2016-05-12 16:17:02…/zip check passed
2016-05-12 16:17:02…PCRE version check passed
2016-05-12 16:17:02…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 16:17:02…php.ini location found. /usr/lib/php/php5.3.6.ini
2016-05-12 16:17:02…Outputting HTML for System check
2016-05-12 16:17:02…No Errors were found *************
2016-05-12 16:17:15…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 16:26:54…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 16:55:17…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 17:00:40…Begin DB Check Process *************
2016-05-12 17:00:40…testing with mysql:mysqli
2016-05-12 17:00:40…Basic form info is valid, continuing Process.
2016-05-12 17:00:40…Testing user account…
2016-05-12 17:01:43…ERROR:: The provided database host, username, and/or password is invalid, and a connection to the database could not be established. Please enter a valid host, username and password
2016-05-12 17:01:43…FATAL:: errors have been detected! User will not be allowed to continue. Errors are as follow:
2016-05-12 17:01:43… The provided database host, username, and/or password is invalid, and a connection to the database could not be established. Please enter a valid host, username and password
2016-05-12 17:01:43…End DB Check Process *************
2016-05-12 17:08:14…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 17:09:04…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 17:09:32…installerHook: Could not find custom/install/install_hooks.php
2016-05-12 17:14:49…Begin DB Check Process *************
2016-05-12 17:14:49…testing with mysql:mysqli
2016-05-12 17:14:49…Basic form info is valid, continuing Process.
2016-05-12 17:14:49…Testing user account…
2016-05-12 17:15:52…ERROR:: The provided database host, username, and/or password is invalid, and a connection to the database could not be established. Please enter a valid host, username and password
2016-05-12 17:15:52…FATAL:: errors have been detected! User will not be allowed to continue. Errors are as follow:
2016-05-12 17:15:52… The provided database host, username, and/or password is invalid, and a connection to the database could not be established. Please enter a valid host, username and password
2016-05-12 17:15:52…End DB Check Process *************

Attempted to install again and only have a white screen. Page source shows the the following -

Any help is appreciated.

permissions… Is the usual culprit for a white screen like that. I go in and check everything under htdocs is owned by the correct owner, chown, and correct group chgrp and also possibly permissions chmod -R 755 under htdocs. see how that goes?

I do not have a htdocs. All file permissions are currently set to 755.