Please read, i really need help. Stumped....

Alright. The other day, i went to start my car. It cranked but i just tapped it so it only cranked for a second or two. (I always do that, dont ask why) Then i went to crank it over to start it and nothing. Not even a click or anything. Checked all fuses, their good. Jumped my clutch switch, nothing. Jumped my whole ignition system by putting a jumper wire from the battery to the ign switch terminal on the starter. It clicks as if the battery didnt have enough cranking voltage, it does though. Pretty much narrows it down to a bad starter right? Wrong, ive used 2 known good ones in there and got nowhere.
Tonight while i was working on it another problem arose. I took my battery out and jumped my cables from a running cars battery. Didnt work but now my ecu doesnt even give the one first flash to show that its getting power. Swapped ecu's thinking i fried that one but the next one still showed no power. Fuses are still all good. WHAT THE HELL IS WRONG WITH MY CAR??????

come on, any ideas are helpful here...

hit the starter with a jack handle or a hammer, not really hard but a fair bit of force, the starter solenoid may have gone , this is not a joke,

just hit it then try turning it over mate