Automatic startup problems with Windows 8

Recently the computer is very strange often automatically start, recall time, it does not seem to be the legendary automatic update time (usually the default time is three o'clock in the morning automatic maintenance), and generally I am self maintenance, so I have this automatic maintenance to shut down. But sometimes when I get home from work, Windows 8 still randomly turns on the boot phenomenon. Because I usually use the habit is the sleep mode, in addition to the power key is the keyboard (PS/2 interface) to boot.

To investigate such phantom launches, I cut through the Event Viewer.

Win+x Opens the Mini function menu, selects Event Viewer, and goes to Event Viewer.

I did a screenshot and I added a filter on Power-troubleshooter (Power-diagnostics) in this order.

Figure 11 A total of four steps to filter "Power-diagnostics"

After the selection, click OK to determine, and then the selection of the directory and the name of the description select input:

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Figure 2 continue to click OK for confirmation.