Issue with pop up on my screen when in the Internet

Hello Borislav and Kishorte and greetings from South Africa,
Firstly, thank you so much for your timely responses to sort out my issue at hand. Yes, i am using Mozilla Firefox and indeed i managed to do what you both suggested and removed the password prompt. Everything is now fine. Once again, thank you for taking the time to assist me, it is much appreciated. Kind regards.

Bob
As Kishore says
Without specific information on your part. hard can  answer correctly.

There is a need specific information regarding your problem

First please compare your case with the described by me
associated with Firefox browser
If the case is different from that described by me. please specify it. to get the right help

In some cases this may be a questionable activity
so please describe your problem or create a screenshot and upload it here for analysis
| AVG (https://support.avg.com/SupportArticleView?l=en_US&urlName=How-to-create-a-screenshot&q=screenshot)
Thanks

I recently posted a call for AVG assistance with a computer Internet issue. I received a response saying i should try unistalling unnecessary programs, search bars, toolbars, plug ins, add-ons etc.  The issue at hand is that when i open up something on the Internet, after using my Yahoo default, a pop up appears on my screen saying "enter the Master Password for the Sofware Security Device" which i have to use my cursor to cancel each time, to proceed.  I can't recall doing anything on my computer that is causing this problem, like some security add on to my browser.  As i am not a computer geek, i would be obliged if someone could assist me in laymans terms(step by step) to get rid of this screen pop up.  I reloaded AVG anti virus on my computer, but this has not helped. Thanking you in advance.

Hello Bob
I'm not familiar with your case

If you use Firefox browser, and you get every time you start the browser. request to enter a password prompt master password

I recommend  or Changing, or Removing the master password
Използване на главна парола за защита на съхранените входни данни и пароли | Помощ за Firefox (https://support.mozilla.org/bg/kb/use-master-password-protect-stored-logins?redirectlocale=en-US&redirectslug=Protecting+stored+passwords+using+a+master+password#w_removing-the-master-password)

Try these steps and tell here what was the result

If you use another browser then please tell here in precise steps
Thanks

Hello Bob.
Well, it is kind of hard for us to identify the exact issue that you face with the information you have provided. It would be helpful if you could send us a screenshot of the issue that you face for better understanding.
Thank you.