I am just beginning the game. I'm in Riverwood.
Whenever I go into the houses in Riverwood there is constant loud banging noises; as if the pots and pans are bouncing on the shelves; or someone is banging on the floorboards and wooden walls. Very annoying.
Has anyone else noticed this?

You haven't disabled vSync by any chance have you?

De ja vu

Quantum mechanics, A pot, pan, or something like is trying to occupy space that doesn't exist and is being forced to jump around as it tries to find a place to go, You can occasionaly find this outside interiors with animals or people who go flying
off in random directions. Earlier I hit a sabre cat in the face with an axe next to a tree and because it tried to ragdoll into an area that lacked the space needed for it, it flung like 40 yards away into a wall. Boy did I feel like a BAMF.

It's people in the rooms banging

Never heard the phrase "get a room"?... They listened.

I am not aware of having done so....but it may be.
How can I check that and enable it?
I thought it could not be disabled?

It's a poltergeist

Its rats. Call the exterminator

Paranormal Activity : Skyrim

Edit- Its a movie. Keep forgetting not every country gets the same stuff

Thanks...you were right...it was an ini tweak for the map I got off TesNexus; it must have included a disable vsync tweak too.
much appreciate your help...
as for the trolls...!

What? There are trolls in that house too?

LOL!!

Thanks, I didn't know this could happen and now I do. I don't have mods yet but I will down the road.

Sigh. Ninjad. Though, I would have phrased it so: 'Maybe it's people banging.'