Drupal 6.8 Installation gives Access denied error

Hello,

I tried installing Drupal 6.8 in a Windows box. It is not a server, It is a PC. In the last step of the installation I get the following error message -

warning: array_fill() [function.array-fill]: Number of elements must be positive in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: implode() [function.implode]: Invalid arguments passed in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: array_keys() [function.array-keys]: The first argument should be an array in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\user\user.module on line 500.
user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1 query: SELECT p.perm FROM role r INNER JOIN permission p ON p.rid = r.rid WHERE r.rid IN () in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\user\user.module on line 500.
warning: mail() [function.mail]: SMTP server response: 550 5.7.1 Unable to relay for ksivasenthil@gmail.com in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\mail.inc on line 193.
Unable to send e-mail. Please contact the site admin, if the problem persists.

But at the bottom it also displays the message -
"Congratulations, Drupal has been successfully installed."

However, when I try accessing the home page of the fresh installation, I get the following error message -
Access denied

warning: array_fill() [function.array-fill]: Number of elements must be positive in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: implode() [function.implode]: Invalid arguments passed in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: array_keys() [function.array-keys]: The first argument should be an array in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\user\user.module on line 500.
user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ')' at line 1 query: SELECT p.perm FROM role r INNER JOIN permission p ON p.rid = r.rid WHERE r.rid IN () in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\user\user.module on line 500.
warning: array_keys() [function.array-keys]: The first argument should be an array in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\block\block.module on line 406.
warning: array_fill() [function.array-fill]: Number of elements must be positive in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: implode() [function.implode]: Invalid arguments passed in D:\Work_Sector\Apache2.2\htdocs\drupal\includes\database.inc on line 241.
warning: array_merge() [function.array-merge]: Argument #2 is not an array in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\block\block.module on line 407.
user warning: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') OR r.rid IS NULL) ORDER BY b.region, b.weight, b.module' at line 1 query: SELECT DISTINCT b.* FROM blocks b LEFT JOIN blocks_roles r ON b.module = r.module AND b.delta = r.delta WHERE b.theme = '' AND b.status = 1 AND (r.rid IN () OR r.rid IS NULL) ORDER BY b.region, b.weight, b.module in D:\Work_Sector\Apache2.2\htdocs\drupal\modules\block\block.module on line 407.

You are not authorized to access this page.

I do acknowledge that since this is a local PC, the SMTP server is not configured properly and it is the default SMTP server of IIS 5.

Should that be the problem for all??

However, I noticed in both last step of installation and post installation the last SQL query has no elements in the "IN ()". In MySQL that is the reason of the problem.

Can somebody please help in figuring out how to overcome this??

Anxiously waiting for help!!!