So my grandma just called me saying that there is something wrong with the computer and the UPS is making a weird noise. When I went to find out what's going on, the UPS was beeping constantly and the computer was in the middle of a startup repair. Obviously there is no way to cancel the repair, and unplugging the UPS would probably do more harm to the computer. So we had to listen to that constant, loud, high-pitch noise while waiting for the startup repair to complete. And mind you, I'm talking about a very old and slow computer with windows 7 on it. After the repair was done, I quickly turned off the computer so I can reset the UPS and save my eardrums from burning in hell.

The worst thing is that I've downloaded the documentation of the UPS, and there was no mention of what a constant beeping means, it only described the meanings of normal beeping patterns (battery low, etc...).

My eyes are still ringing and my ears are still blurry from 20 minutes of that noise.