2005 Jetta has no power. EPC and many opther

Electronic Power Control take readings from a dozen different sensor, and sends out just as many operations. If you invest $50 in a VAG scan tool, you will find all your problems listed for you on a nice display. It plugs into the cars computer under the steering wheel. You will not damage anything, it can only read and clear codes, and do some tests. It will take all the guess work out. Then post the codes here for help on fixing them. It could be you need a new ignition coil, for instance, which you can get for around $100 if you shop smart, and on-line. An auto store would charge $350. So, get the scanner....and then we can get the car running.
Good Luck!