I have been experiencing random restarts on my desktop for the past week.
The restarts do not show any BSOD or errors. I have tried turning off automatic restart option on Windows as well as disabling auto restore last state on power loss in BIOS. However, it is still restarting. Sometimes it occurs before reaching BIOS, sometimes few minutes into Windows and sometimes few hours later.
In windows event viewer, I see event ID 41, task category 63.
"The system has rebooted without cleanly shutting down first. This error could be caused if the system stopped responding, crashed, or lost power expectedly."
Event Data shows BugcheckCode: 0, BugcheckParameter1 to 4: 0, SleepInProgress: false, PowerButtonTimestamp: 0
I have also ran memtest86 + sfc and yield no results. I do not overclock my system too.
I have replaced the PSU and this is still occurring. Does this mean that it is my motherboard that is failing?
EDIT: I have also been logging the temperatures of my HDD, PSU and CPU, nothing out of the ordinary. I also clean out dust often. OS: Windows 7 Ultimate SP1 64 bit