Hi Lewis,

Welcome to the Community.

Please update the driver by clicking the link mentioned below:

http://dell.to/UWGovd

Also, for drivers you can click the link mentioned below which will take you to the drivers website:

http://dell.to/QjjZDA

Enter the Service Tag of the computer and choose the Operating System installed on the computer. Please update the latest version of drivers available.

Thanks & Regards
Manshu S
#iworkfordell