White shaky line across my screen?

Mac products
1

White shaky line across my screen

3

Hello Joan,

Could you let us know if you suspect that an AVG program is causing this issue?
Also, please spcify the name(s) of the AVG program(s) installed in your computer.
Thanks in advance!

2

Hello Joan,

Could you let us know if you suspect that an AVG program is causing this issue?
Also, please spcify the name(s) of the AVG program(s) installed in your computer.
Thanks in advance!