You are most welcome 76broadband
We will be here when you are ready to test
FWIW: I hope that you are not being hard on yourself over the choice of PSU, many others have done the same in the past and will do so again in the future and most of the time it is or will be because of how a certain PSU is marketed, for example, theoretically a 1000W PSU should be able to power most users computer with ease and that is what sellers push ** 1000W ** in big and bold letters, problem is when tested cheap brands like Shark and others cannot produce anything like 1000W, are made of cheap materials, are assembled badly and are unstable when put under load.
For yourself and others, my canned text for guidance on purchasing a new PSU;
Before purchasing a new PSU it is advisable that you measure the dimensions of the present PSU and ensure that the new PSU has the correct power connections for the MB, HDDs, optical drives, FDDs or add on cards such as a video card if one is fitted.
Any potential PSU should have a minimum of a Bronze efficiency rating.
When purchasing a PSU that needs to support an add on video card you must check what the add on card manufacturers power supply recommendations are and adhere to them, please note that the recommendations are the minimum and using anything less if proven will void any warranty should the add on card fail due to being underpowered.
Quality brands include Antec, Corsair, EVGA and Seasonic, see links in my sig below for brands to trust and brands to avoid at all costs.