Trouble connecting to archer a7
So I just moved to a new appartment that includes tv and internet. The previous owner left the ac1750 that is connected to a wall port. Since my arrival a week ago the connection has been very poor. At times I am able to connect to the router but the led lights indicate that the router isn't connected to internet. Sometimes the internet light is flashing but then I can't connect to the router.
When I am connected it's usually no longer than 30 minutes before the connection is interrupted. Sometimes I have to wait 10 minutes, sometimes hours on end.
Since the wall port is all I have and I have no idea where the modem is placed I am not sure if the problem lies with the router or the modem. I haven't had the opportunity to talk to some of my neighbours to check if they have the same problems. It this point I still think it's a little bit early to contact the landlord and I don't want to invest in a new router if the one I have is perfectly fine.
Please help