Monitor turning on and off, Power surge issues?

[Esuess]

My monitor keeps turning on and off whenever a load (appliance  e.g. vacuum cleaner) is on, but my PC still actually stays on.

 

I actually recently bought a UPS (APC easyups 1000va) in hopes that the issue would be resolved. Unfortunately this wasn't the solution as it still turned on and off.

 

I've tried researching various ways that I could mitigate this and here all I found is this thread below:

 

Before I was using the UPS, I actually thought it might have been my AVR. It seems it really is just the crappy electrical lines here (From the PH btw).

 

I've tried the following:

1. Different AVR

2. Bought a UPS

3. Plugged directly in wall

 

if there are any suggestions it would be very much appreciated as this issue is getting quite annoying.

 

Thanks!