In Windows 7 and 8, "Sleeping" is nice to let us jump in previous work environment instantly.
But many PCs will wake up or reboot from standby mode unexpectedly, it almost caused by setting of "Network Wake on LAN options".
It can be solved easily by unchecking selection of "Wake on Pattern Match".
Thanks for the information. I am pretty sure this will be helpful for other users that may have this issue. We really appreciated it.
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