Custom GPU Miner in OP.
thorcoinminer.exe -o poolipandport -u poolusername -p poolpassword --scrypt --Nfmin 4 --Nfmax 30 --StartT 1393167677
I tried this miner and command line and it crashed my windows.
I also use the same GPU's and am able to mine with it.
The same thing happens to my miners when the pool i'm logged into doesn't respond. It crashes the miner and ultimately the OS.
If i can ask, what pool are you connecting to? Please make sure you are using the GPU miner that was posted in the ANN post.
you have PowerColor?
pool:
http://thorcoin.pools.mindfox.net/pls send me a link to your miner and comman line and pool.