Windows Forum Admin
Nobody ever wants to think it could be PSU failure but, sadly, thats been the bane of a lot of systems for a long time. Consider going with EVGA (not an endorsement), but they usually do stand by their products and have a good warranty system and support team. Good on you to break out the test kit on that thing.. that would definitely explain the whole system going into a death spiral. Also may I recommend:
Power Supply Calculator - Select computer parts and our online PSU calculator will calculate the required power supply wattage and amperage for your PC.