please use CgMiner 3.5.0 or 3.7.2(only)
download link
http://ck.kolivas.org/apps/cgminer/3.5/cgminer-3.5.0-windows.zipthis pool is very good csc.coinarmy.com
your set on the bat file
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o stratum+tcp://csc.coinarmy.com:3333 -u astarto.test -p15245 --thread-concurrency 24000 --gpu-engine 1100 --gpu-memclock 1250 --gpu-powertune 20 -w 256 -I 20 -g 1
only change gpu engine and memocloclk and username and pass