I haven't had it checked, but spoke with a friend that is an electrician and he stated that it sounds like a inrush of current.
So here is what was happening.
So in our home office we have 3 sets of outlet, all have things plugged into them but only 1 set is usally used at any given time.. mostly my set with my pc connected.
So I use to have a UPS on my pc, and on the 2nd set is where I had my printer connected with no UPS. Anytime I would turn on the printer, the lights in the room would dim for a sec and you could hear the UPS kick in. And it would also happen when I would send a print job to the printer.. Once my UPS failed and needed to be replaced I stopped using the printer cause without the UPS it would reboot my pc, I cant have that..
So since my friend doesn't live close by, im posting here for some advice on what I can check or troubleshoot myself before calling out a electrician.
It only seems to do this in this one room..
I haven't bought a new UPS yet, but if I do, im going to get one for both the pc and printer, but rather find a solution for the issue anyway.