XPS 12 Ultrabook Convertible Not Going Past Dell Logo

My XPS 12 Convertible does not go past dell logo on restart. It shows the logo then goes off, then restarts again to the dell logo. I have tried pressing F2 or F12 but that does not work as the laptop goes off. 

Has anyone ever experienced this and what was the solution? Or any guru out there know what I can do to sort this out.