How can I calculate voltage in this circuit?
In your first attempt, the supply voltages were not correct. OK - you have corrected this.
At the same time, however, you have also changed the node where the input voltage is applied.
Note that there are two basic options for an NIC:
(1) Short circuit stable (input voltage at the non-inv. input) with a working negative feedback.
(2) Open-circuit stable (current source resp. voltage source with a suffieciently large source resistor at the inverting input) with some positive feedback.
Your second circuit cannot work because the pos. feedback is dominating (negative feedback signal is shortened by the signal source). The output voltage is latched at the supply voltage.