If the Title and Description of your website is showing as IIS7 it means that, header tag of your website has title and description as IIS7.
1. Check between <head></head>. if the title tag (<title></title>) contains IIS7, change it based on your website. Google will display 50-60 characters of your title tag as your website title
https://moz.com/learn/seo/title-tag.
2. If your meta description tag contains only IIS7 change it also. (<meta name="description" content="Change your desctiption here">. Google will consider 150 and 160 characters
https://moz.com/learn/seo/meta-description[
^].
3. If your title and description is not having IIS7 kindly check whether your title and descption is related to your website. Google will consider H1 tag of your home page as title if the Googlebot finds your title tag is not useful.