|It does sound like the 110Volt/220Volt selector switch that you slid. Logically, if you are in the USA (110/120Volts) then putting it on 220Volts would make a lower output if any. If you heard a bang, then a capacitor or other internal component may have been damaged, so if you open it up and look for a replaceable fuse, also look for visible damage like a cylinder that is brown or has an irregular hole in it. If there is visible damage, do not bother looking for the fuse, just replace the power supply. If on the other hand, you live in another country that uses 220Volts as the standard, sliding the selector to 110Volts may also let a brief pulse of higher voltage through to the motherboard and other components before burning itself out. If high voltage did get through under either condition, you may be replacing other things, unfortunately.|
You have to be a little bit crazy to keep you from going insane.