power supply
http://i60.tinypic.com/2ex5u9i.jpghttp://i62.tinypic.com/15dvoza.jpgswitch board
also the power supply in this batch have a known bug, the remain electricity will stop it working after power off , so if you find it is dead after powering off, you need wait 30-60 min to lease the remain electricity or re-plug the 24 pin cable in switch board to lease it
This is not a bug of the PSU.
These are 750 watt PSU.
2 pci-e connectors plus 1×8 pin motherboard cable split into 2 pci-connectors with an adapter.
Replace the PSU will solve all your problems.
If you keep using thid PSU, your house will burn down, thanks to Mr. Lee.