My gtx 950 was working fine until it suddenly its display gone blank and the pc was still on. when i turn on the pc again it showed to power down and connect pcie power cable. Ichecked every thing the molex to pci cable, different psu, power to graphics card. Everything is fine. But the gpu some time works fine.but now its only showing to powerdown and connecconnect the cable. Its bought from aliexpress so not warranty. Please help me thanks.