apcs13 :
Peak consumption of 180W? Are you joking? That is pretty funny though, because every source that I have seen so far shows 200W+ consumption...
http://www.geforce.com/hardware/desktop-gpus/geforce-gtx-770/specifications
http://www.tomshardware.com/reviews/geforce-gtx-770-gk104-review,3519-25.html
http://www.tested.com/tech/pcs/455849-tested-nvidia-geforce-gtx-770-video-card-get/
Plus in my own personal testing I have seen power usage of 250W+ easily, let alone the fact that I have a lot of issues running my PC on a 520W power supply, wihch is substantially greater than a 450W...
And yeah, a virus scan won't hurt, but it certainly won't help if the power supply is the issue (which it is causing some of without a doubt)
nope not joking, and W1zzard knows his s#it. blame him if you like.
the geforce link lists the rated TDP, not actuall power consumption.
toms measured 193W running the same game tpu used, so ~10W difference between samples.
tested.com measures the whole system with unspecified load (likely furmark) at the wall socket, so psu inefficiency is included (thou with modern 80+ rated psus that's not such a big issue anymore, maybe 10-15% extra)
based on your posts you're running oced cpu as well, likely using much more power than his stock cpu.
Anyways I've made my point and you have made yours plenty clear already
edit i noticed you've unselected the 'best answer' the OP chose, dont be childish...