You and the people upstairs will need to work to isolate the problem.
Trip switch on fuse box won t stay up.
Unplug all appliances that are plugged into outlets on that circuit and turn off all the lights then try the breaker again.
In the case of circuit breakers the immediate answer is to find the breaker that has tripped and reset the lever to the on position.
Locating the root of the problem is largely a process of elimination and something you can do yourself.
Check each appliance for overheating when you unplug it.
Leave that appliance unplugged and have it repaired by a qualified electrician.
First turn off all the individual breakers one by one then turn the whole house breaker off then turn the tripping breaker on.
Unplug all of your appliances and try resetting the fuse switch.
How does a fuse work.
If it won t stay on in that circumstance it is certainly bad.
What causes it to trip or blow a fuse.
The trip switch is down but when i flick it back up it won t stay up and seems to spark.
Most likely there is an overload or a short circuit.
All the downstairs lights have gone off but everything else still working.
Unplug all appliances on that problem circuit and switch off any immersion heaters if you have one.
The fix is to reset the breaker lever to the on position or replace the blown fuse.
A fuse switch that keeps tripping is usually caused by a faulty electrical item or an overloaded circuit.
If it stays on plug the appliances back in one by one until it trips again and service or discard the appliance that makes it trip.
Doing this on tablet with no lights not going well.
If you have attempted to reset your fuse switch but it keeps tripping it s likely there s a problem with one of your appliances or sockets.
First disconnect or turn off everything on the circuit then turn on.
Once reset plug your appliances back in one at a time and switch them back on.