Asrv-a.akamaihd.net is a pop-up that occurs in browsers infected with adware. For example, if you have SavingsBull ads and random windows popping up in your browser periodically. They will be titled as Ads by SavingsBull, and the chances are that these windows will be brought from asrv-a.akamaihd.net website. Definitely, this means your PC is in a trouble, this is why you must fix this issue as soon as you can.