rheynemusic Posted December 12, 2010 Share Posted December 12, 2010 Hello, My power supply is an HX850, about 3 months old. Recently, whenever I simply touch one of the two front USB connectors on my case, the computer instantly shuts down or reboots without a clean shutdown. It doesn't happen with my finger, but if the metal connector from any USB device simply touches the metal socket, the computer will instantly shut down or reboot. This does not happen all the time, but it's easy enough to replicate. It is not driver-related, because the device isn't even fully plugged in, and not even half-way plugged in. I took the metal USB plug from a game controller and also from a USB wireless receiver, and simply grazed the ports across the side, and the machine rebooted. My motherboard has two sockets for USB leads from computer cases, labelled USB 1, and USB 2. One of them was not being used, so I took the lead from the front USB ports of my case, disconnected them from USB 1 on the motherboard and tried the second socket. The USB ports work but the random shutdown still occurs if I occasionally graze the front ports with the metal from a USB device's plug. No other processes are running, nothing is draining my CPU, this is happening at idle. edit: I also wanted to add that the PSU responds great under full load, like a full 3D Mark Vantage / 11 sweep. Games / audio apps perform fine, no random shutdowns or anomalies. I'm stressing the power supply with a pair of GTX 470's, and with an overcloked C2Q, the PSU is indeed getting stressed, and there are no issues. The shutdown from the USB ports is happening at idle. Is the power supply defective (Corsair HX850) or is it behaving the way it should due to protecting itself or the computer from another problem? Thanks for any assistance you can provide. Link to comment Share on other sites More sharing options...
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