lost all power… Help please..?

[particlewave]

Have you replaced the ignition switch recently?
I'd start there and disconnect/reconnect battery to get windows up.

Adding thoughts...
This behavior sounds exactly like a bad battery or connection. I went through something similar about a decade ago with my daily driver. Had the exact same symptoms when trying to start (clack from the starter solenoid, then the dome light and all electrics would die and not come back on until battery disconnected).
I replaced the battery, to no avail. After a few days of trouble shooting, I finally found a corroded ground cable. Replacing it fixed the problem, but I'd still start with your ignition switch as it's a known issue and fairly cheap at most auto parts stores.