Do you mean the power brick or the power jack that goes into the socket on the laptop? If the former, then sorry you're going to need to get a power brick of the same model to power your system. If it's the latter, you can easily source a power jack and splice it onto your existing power bricks output if you're proficient with wiring and electricity.
To reiterate the question, are you talking about this:
or this
?
P.S:
I'm sure you can afford
this.