A few years ago my Power Supply for my Emachines 270 went bang and smoke came out. After searching many forums I had decided that we needed a new Power Supply. Yesterday, I got one with the correct specs for the computer and attempted to install it. I have triple checked that all the wires are in the right place and I am adamant it is installed properly. When I plugged it in and turned it on, the computer didn't start. There were no lights, or fan's on anywhere.
Is there a fault with the new PSU or has the past Power Supply damaged the motherboard too? And is there a way I can find out where the fault lies?
Please answer quickly so I can determine whether to refund it or not before my returns time runs out