What is the version of the following sentence with correct punctuation?

Unintentional Formatting At times while removing unwanted data from other system drives you might mistakenly right click on Samsung Spin Point Internal hard drive and go ahead pressing Quick Format option
Unintentional Formatting: At times, while removing unwanted data from other system drives you might mistakenly right click on Samsung Spin Point Internal hard drive and go ahead pressing "Quick Format" option.