Thank you for your message. We will be glad to assist you on this.
Has there been any recent software changes like installing a new application, game or Windows updates?
Do you get any blue screen error message when you launch any graphics intense application?
Run a hardware diagnostic by following this link http://bit.ly/2fJuGXB & check if there is an error listed.
Open device manager & check the hardware ID of the device that has the error.
Please click on my Dell username & send a private message with the service tag, registered name & email address.
Dell-SreejithRSocial Media Support#IWork4Dell