Elitedesk 800 LTS G1 reboot on its own

Hello

We have 20 units of Elitedesk 800 G1 SFF; running Windows 7 Pro 64 bit.  One unit, an intermittent problem.

Use Shutdown of Windows, the computer turns off.  Some time later, during the night, it turns back on.

Interesting note: we have a power-password set in the BIOS and turning on the results of the computer at a password prompt.  When this unit restarts randomly, it seems to bypass the password and goes directly to screen ctrl alt del to log into Windows.

I tried to turn off all "wake" options I find for the NIC, the mouse, the BIOS settings and even tried the registry to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon «PowerdownAfterShutdown» hack

The BIOS, Chipset are updated, as are all the other drivers offered by HP.

I witnessed the restart once - I stopped, looked at the front of the computer, all the lights were out, and it restarted.  I had not touched a thing.  Of course, I him didn't restart like that in front of me again. :-\

Additional ideas?

Thnaks

Call our hp elite support @ 1-800-334-5144

Tags: HP Desktops

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