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Just signed on and having a problem with testing a circuit

I'll design the circuit hit simulate run DC Solver and the DC Solver says the circuit is good, but it's not correct when I put in exaggerated mistakes...DC Solver still says it's correct and if I build the circuit as designed...it doesn't work

how to I test a circuit and the program tells me it works or it doesn't

The DC solver just computes the voltages and currents at various static points. It doesn't "work" or "not work".

If your circuit needs to do something, maybe one of the time or frequency domain simulations will be of more assistance.

Without the circuit in hand, and what you expect "work" to look like, we can only guess.