Windows 7: Random reboot

Recently, and now regularly, I am experiencing random reboots. No BSOD, no crash dump files. Just powers off, reboots with the warning that Windows did not boot properly, but selecting Start Windows Normally results in normal boot cycle. All drivers updated and no clues in the Event Viewer.

I have run sfc /scannow, Memtest +86 through several cycles, and while I have solved several driver loading issues that I hadn't noticed before, the reboots continue. They are not temperature or load related, but just normal web browsing, or just at idle.

I have attached the zip file generated from your diagnostic software, as well as the boot logs for the past several boot cycles. I hope that someone can see the root cause of this.

Thank you

Eric

Has your Acer had a Clean Reinstall - Factory OEM Windows 7
yet? This would tell you whether it is related to the bloatware or duplicate utilties which interfere with better versions built into WIn7.

Short of that establish a Clean Boot, try free lightweight MSE replacing any bloated AV, check the logs and System Resources and test your HD from the Troubleshooting Steps for Windows 7.

@Golden, I ran DV. No faults noted for as long as the computer would stay up - it did so for at least 8 hours at one stretch. Is there a log file somewhere to review if it noted anything right at the time of the crash?

@gregrocker, I am using just MSE and Malwarebytes currently, and MWB does not detect any problems

The behavior of the shutdown is exactly as if I had given it a Sleep command from the Start button or the hardware button on the box. Instant off, with a momentary surge of the system fan, then an immediate reboot to the 'Windows Failed to Start Properly' dialog page.

I disabled all power management in all USB hubs, but this did not solve it. Could it somehow be receiving the sleep command from another piece of hardware? The NIC perhaps?

I have a clean disk image from when I installed Win7 after removing Win8 from the box. I don't want to have to go that route as I have a lot of software installed since then, but will if I cannot find a solution.

Thanks in advance

Check your bios setting for your RAM. I had the same problem and found that RAM
clocking was for 1866MHZ while I had 1333MHZ memory installed.

I am sure what you say is true. The info I gave fixed my problem with reboots. Does not cost anythings for him to check his bios and make sure the setting are correct for his RAM memory.