Hi,
A virtual ground is 0.000 volts constant, while a virtual voltage source is some other voltage which is also constant relative to the non inverting terminal. So if you set the non inverting terminal to say 2.500 volts then the inverting terminal will be close to that voltage, and so that makes the virtual voltage source equal to 2.500 volts or close to that.
If you have something simple wrong with the circuit like a wrong connection or a bad part, you have to fix that first before anything is going to work at all. Then you can look into the lower 1k to ground issue.
I'll also see if i can simulate this circuit myself later, and/or we can look at some equations for this circuit.