One obvious answer to this is switch on your computer! My car won't start - turn the ignition key then. We are not mind readers. So little information so no diagnosis. Tell us more please. Read some of the other posts on this Forum but if you are talking about mail with a virgin.net address then the answer is here:
Superuser 2017/18 Use Kudos to say thanks Mark answer as "helpful" only when the problem is solved Please don't send me private messages unless I ask you to. I do not work for VM. The advice I give is based on my best understanding of VM policy and practice. You rely on it at your own risk.