I Have a big problem with 4x r9 290.
One of my 4 gpu is not mining (GPU 0)
Right after running vertminer 5.3.0 graphic driver reports an error. the screen starts to blink and then screen back to normal.
But the verminer says that gpu 0 is mining at 0 khash/s.
Tried different settings with no luck.
My settings are:

--scrypt-vert -o stratum+tcp://stratum.vertco.in:8080 -u user.w3 -p x --thread-concurrency 24550 --lookup-gap 2 --auto-gpu --gpu-engine 800 --gpu-memclock 1250 -w 512 -I 20 --gpu-powertune 20 --auto-fan --gpu-fan 40-85 --temp-overheat 90 --temp-target 70 --temp-cutoff 95 -g 1

http://img.ctrlv.in/img/52f8a784e63cd.jpg

system specs:
i5, 8gb ram

Please help!