Dear Mr. Davison,
Thank you for your reply.
I have gone through your mail that the external monitor works fine, the screen shot has shown the vertical line on the screen and diagnostic has been passed.
Please provide us the details for service which I have sent in last interaction so that I will create the service and replace the faulty part.
I will be waiting for your reply.
Thank you for giving me the opportunity to assist you. Your case number for this interaction is [snipped].
Thank you for choosing Dell.
Thanks & regards,
Deepak Kumar Singh
8:30 AM to 6:00 PM
Dell Hardware E-Support UK & IRE Support