What is your PSU size and brand name? It sounds like your PSU is dieing. Also do you monitor your temps? Have you up dated all of your drivers? Reposte and we will work from there.
Thanks for the reply.
On the highly embarrassing end, the blank screen was the death of my trusty yet ancient monitor so everything is still running just with the lights and warnings as described.
Power supply is Xtreme Gear 950W
I have not updated drivers in ~6 months but will do that as soon as I get a chance.
Have not monitored temperatures in the past but installed PC Probe that came with the motherboard and will keep that running.