Strange siren sound coincided with a pop-up renewal notice

AVG Performance
1

During a PowerPoint presentation, which I have done MANY times, a warning that my AVG virus-protection would soon expire, popped up on the external monitor to which my laptop was attached via a brand new HDMI cord. 

Coinciding with the unexpected pop-up, a loud, whining, siren-like alarm was heard. At first, I thought it was a fire alarm in the building. Then, I realized that it was coming from my computer
and immediately unplugged it from the HDMI cord.

As soon as I reconnected the cord, the pop-up disappeared and the siren stopped.  Nothing seemed hot or abnormal. There was a set of small, external speakers plugged into the laptop, but they hadn't been working and the sound wasn't coming from them.

HAS ANYONE EVER EXPERIENCED THIS? This wasn't a lost phone alarm or an alarm clock sound. 


2
Hi Linda,

We regret for the inconvenience caused.

We're not certain with the exact issue. Have you activated the product?

Please verify whether you have activated the program.

Then go to settings -> General -> notifications -> Please check the box to enable the program to silent mode.

Once it is enabled, the program will be in silent mode.

Please share us the screenshot of the popup message.
3
Hi Linda,

We regret for the inconvenience caused.

We're not certain with the exact issue. Have you activated the product?

Please verify whether you have activated the program.

Then go to settings -> General -> notifications -> Please check the box to enable the program to silent mode.

Once it is enabled, the program will be in silent mode.

Please share us the screenshot of the popup message.