Accessing the files to scan

Hello Nicola,
Thank you for reaching AVG Support Community.
We sincerely apologize for the difficulties you are currently experiencing.
We're glad to look into this and help you.
May I know the operating system of your PC? (i.e, Mac or Windows)
Please mention the version of the Mac operating system.
Please share the screenshot of the error message.
Please refer to this article to allow permission for AVG AntiVirus on Mac OS.
The system preferences administrator password is nothing but your Mac user credentials.
In case, if you face any difficulties, please let us know so that we will help you with additional support.
Thank you.

I am trying to scan my computer in order to check for viruses and my computer keeps restarting because of a problem. It says "open system preferences" but there is no button to click the lock in the lower left corner in order to give access to the files. The other day I tried to do it when the lock was on the screen but I didn't know my password to unlock it. Please help me.
Thank you
Nicola

Hello Nicola,
Thank you for reaching AVG Support Community.
We sincerely apologize for the difficulties you are currently experiencing.
We're glad to look into this and help you.
May I know the operating system of your PC? (i.e, Mac or Windows)
Please mention the version of the Mac operating system.
Please share the screenshot of the error message.
Please refer to this article to allow permission for AVG AntiVirus on Mac OS.
The system preferences administrator password is nothing but your Mac user credentials.
In case, if you face any difficulties, please let us know so that we will help you with additional support.
Thank you.