Hello,
My name is Vishal and I work for the Social Media and Community Team at Dell.
If you are unable to login to Facebook due to cookies disable, this is issue with the browser you are using. If you are using Internet Explorer, please find the below link to enable cookies. This link has screen shots for the same.
http://bit.ly/6A3Cv7
In case of any further help, please reply.
Thanks,
Dell-Vishal S