It sounds a bit like a water pump that went out all of a sudden. Losing the belt would kill the Power Steering, so maybe the pump bearing failed and the belt burned or jumped off.
Do not run the engine. You need to drain out the fluid antifreeze mixture.You can then refill the power steering fluid.
Both of them can leak at various places. You just have to look at them and see where they are leaking before fixing them. It's impossible to be more specific than this.
Check power steering belt, check power steering pump, check rack for leaks
Power steering hoses Pump Steering rack
You can't. The power steering is driven by the motor. If the motor stops, there is no power assist for the steering.
The problem is probably in the steering gear. Clogged passages in steering gear. Leaks in steering gear.
could be several places, power steering hose, rack and pinion (or steering gear box) or power steering pump.
Hard power steering means there is little to no fluid left in the system. The power steering system should be flushed and checked for leaks.
You can, but you risk overheating your power steering pump and rack. Not good for the seals and they will leak for sure after a while.
Usually the leaks are at the high pressure line or the return line of the power steering pump. Tighten all the lines at the pump.
If the power steering box is leaking below the adjusting nut, it is like that the seal is faulty. Replace the seal on the power steering box.
The most common reason for power steer failure is fluid leaks. On power steering pump, you should check behind p/s pulley for leak at the shaft. On the rack and pinion(steering gear) check rubber boots at both ends and check for leaks where steering shaft is connected to rack and pinion input shaft. Check pressure hose at crimp fittings for leaks.