Welcome to Justanswer.com, my name is ***** ***** I will do my best to assist you.
If the action center is flashing, there must be some issue it wants you to fix. Such as your antivirus being expired or your firewall being off or something else. I can help you fix it, if you find out what the issue is. Or, if you want to I can connect to your computer via a secure remote connection where I can fix the issues on screen, in person. If you want to try that, let me know.
In the meantime, if you want to handle the issues yourself.. Then open your action center and go make whatever repairs it suggests.. That will stop it from blinking! Heres a link which shows how to access and use the action center.
If you have further questions, let me know.
I strive to provide great service, and greatly appreciate a rating of excellent ( 5 stars ) selected and submitted below this answer or at the top right of the screen. I always answer follow up questions.Dustin S.Senior Technician and Network Switching Systems Operator / Maintainer.