My reply was not meant to imply anything other than what I said.
Nothing in your 'description' accounts for the power short. Clearly there is a cause, whether you know that cause or not (or are willing to tell us). A repeat of such an event could have a catastrophic effect on your PC and other devices, not to mention yourself.
My 'suggestion' to have it professionally installed was to lessen the chance of harm to yourself and equipment. It wasn't meant to imply that you're not capable.
Whether that is an 'absurd' idea is, of course, your call.
Dell