Water not coming through nozzle of nespresso essenza

Try gluing the seam with lock tight glue or similar plastic gluing compound. Let it dry overnight and try again.

OK fill the tank and only use water press the small cap botton and after 5 seconds stop the machein and do the same again untill the pump gets the water into the system

Run vinegar through it

I need to find a replacement water tank for my nespresso essenza C100 coffee machine. Mine broke, any ideas where I might be able to find one?

The Leakage in Nespresso Machine happens because some of the damage in components or seals in one of following
The water tank
Thermo block or heating component
Internal water pipework
This article might help:
https://coffeeabout.com/why-nespresso-machine-leaking/

I opened mine when this did this - it also happened to my second Magimix Nespresso Manual machine. A short pipe carrying pressurized water had burst. I called Nespresso . parts were not available and they offered me a new half-price machine. We are talking a 4 inch piece of plastic tubing here. Shame on you Nespresso for encouraging me to throw what is otherwise a fine machine....

Try...Hit the start button then Lift the lever and push back as far as possible and hold for 3 seconds. hit stop button, then close lever. this should restart machine.

I have a nespresso type D90 which does exactly the same thing so it is probably not just yours

Sounds like a gasket or seal gone or a split pipe.

If it's still under warranty - take it back for free service or replacement.

If you do have to attempt DIY, then a clear silicone sealant may save you the price of expensive gaskets.
Be very careful when taking apart - take notes or photos as it will help put it back together !
I usually put related sub-assemblies together with their screws in separate pots.

It's not supposed to make holes in the capsule until the water comes through. So, basically, when you put the capsule in, it pierces the capsule in three spots, on the top. The aluminum part will not pierce until you press the button and water comes through. If water is not coming through, then you can clear the air bubble by opening the lever on top of the machine, pressing the coffee button, and then closing the lever once the water begins to come through.