What is the brand and model of the power supply unit? If there is insufficient +12V rail capacity then you can get spontaneous reboots without any warning.
What is the brand and model of the power supply unit? If there is insufficient +12V rail capacity then you can get spontaneous reboots without any warning.
Spontaneous reboots are usually caused by hardware problem(s).
Also check Windows Event viewer for any system error events that may give you an indication as to the cause.
The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power unexpectedly.
thats what i found