Current leak during sleep? P8Z68 board

sskings

Junior Member
Aug 20, 2006
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My Asus P8Z68-V based system has recently developed a phenomenon that causes it to be unable to successfully sleep. When the Windows tells it to sleep, everything proceeds correctly at first and the front panel power light goes from on to blinking as it should. But then after about 30 sec, the front panel light losed power -- blinks really fast a few times and then goes out. I did get a message once or twice that there was a power leak via USB device, but the message occurs only rarely, so I don't know if its true.

Anyone have any ideas what going on here and how to fix it?
Thanks. sskings