Fixing mining rig (GTX1060) no signal problem

I have a only 1-month old mining rig. It had been working fine before. I only turned it on for around 10 hours per day, and had been mining Monero for 4 days. It was still working fine on May 11th. Then I didn't turn it on for 2 days (Sat & Sun). It suddenly stopped working on May 14th. DVI cable and the monitor are working fine ( I tested them with my PC). I tried to turn it on again on May 15th morning. Still didn't work so it was off the whole day. On the same night I tried again, there was signal, running Window, but it says "Your PC has some problems, please wait until it finishes..." So I waited for it hoping it would work again. But then the signal just went off again by itself. Ever since then it has been no signal. I tried to unplug all GPU, and connected a HDMI cable with the monitor on only 1 single GPU, but still no luck. Equipment: Motherboard: Asrock H110 Pro BTC+ GPU: Nivida GTX1060 Windforce 6GB GDDR5 X6 PSU: Supernova G3 1000W 80Plus Gold Full modular Processor: Intel G3930 2C2T 2.90G 2M Cache LGA 1151 SSD: Kingston A400 120G Sata3 TLC Ram: 4G D4