I have built a 2800 Kh/s mining rig. I have 6x R9 270 doing 470 Kh/s each. I am running BAMT 1.3. Other specifications are below.
1) 1x 1000w and 1x 750w power supply.
2) 990FX-UD7 motherboard.
3) 4 GB memory.
4) Athlon processor

This rig hashes for a while (up to 10 hours), and out of the blue, it stops hashing but stays on. Can anyone tell me what could be possibly wrong? I have also attached the picture of the hash rate. It looks that it is declining, but I am not getting any hashrate at wemineltc.com. What can I do?