Hi, and thank you for asking your question. My name is ***** ***** I'll be assisting you today.
Are you using a laptop or a desktop?
May I connect remotely with you to troubleshoot the issue now?
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is this the entire computer screen that is an issue or one specific program ?
if it is the entire screen it should be under display settings
then advanced and then raise the resolution.
if it is only a small amount that is missing around the edges that might be a function of the monitor and you can usually stretch it on the menu of the monitor itself