Similar problem here. And I also get a BSOD dxgkrnl.sys+5d140. FurMark test was fine escept for the noises...
btw: Already posted the same problem here
-> http://www.tomshardware.co.uk/answers/id-1961790/bsod-dxgkrnl-sys-dxgmms1-sys-nvlddmkm-sys.html
I have a 750W PSU.
GPU shark says:
GPU...
Same problem here! How did you fix the first problem?
BSOD
dxgkrnl.sys
dxgmms1.sys
nvlddmkm.sys
dxgkrnl.sys+5d140
using gforce xp 334.89 driver on my gtx 660
win 7 pro
with older drivers same problem...