SOLVED!

Read more here: http://rog.asus.com/forum/showthread.php?23087-***SOLVED***-G75VW-Reboot-after-Hibernation&p=160222#...

Hullos all!

My G75VW randomly reboots, and I cannot for the life of me figure out why.

Specs:
A stock G75VW T1107 - no hardware tweaking of any kind done:
GeForce GTX 670M, 3GB
16GB RAM
Intel Core i7 3610QM @ 2.3GHz
750GB SATA HDD. No SSD drive installed. No 2nd drive installed.
BIOS 207 (newest version)

First thing I did was to erase internal HDD, and install Windows 7 Ultimate (I hate bloatware). I used the drivers on the Driver CD that came with the PC.

Device manager does not report any devices as faulty or missing drivers.

The PC just turns off instantly, as if power was pulled - then a 2-3 second pause, and restarts.

Observations:
There is no pattern (that I can see) to the reboot frequency. No specific action triggers it.
No Blue Screen (reboot at failure has been deactivated).
Nothing in Windows Event Log (except a notification telling me that Windows has unexpectedly shut down).
It has been running for anywhere between 30 minutes to 2 days between crashes.

Crashes has happened while:
Playing Diablo III
Browsing a webpage
Idling in Windows
Reading a .pdf
Changing a setting in BIOS (I did not Save and Exit - simply changed a setting.)
Playing a song in WinAmp
...and a few more I can't remember ;o)

Things I have tried:
Stress testing CPU, GPU, USB ports, internal HDD. Not a hitch - no reboots.
Checked memory with Windows Memtest - all tests completed without error.
CPU/GPU temperatures are well below any critical limits, even during stress tests.

I'm running out of ideas - only thing I can think of is a hardware issue, and I'd really hate to send it in for repairs *sigh*

The BIOS reboots scares me - might've been a fluke, but BIOS crashing spells major trouble to me 😞

Any gurus here who have any ideas?

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Additional info, Sep. 17, 2012
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Here's what I've found so far:

1) Reboot happens ONLY after Hibernating.
2) Reboot happens exactly 10:04 mins after pressing the power button.

Here's what I've tried after the above discovery (thanks to the other posters in this thread for the Hibernation clue ;o):

All tests run on a clean install of Windows 7. No additional drivers installed.

1) Entered Hibernation, and resumed from Hibernation. Reboot after 10:04 mins.

2) As I cannot enter BIOS when starting from Hibernation, I tried booting from a disc with a boot menu. I left the boot menu active for 10:04 mins, and *POOF* - reboot.

3) Went into Hibernation, booted into boot CD menu, left it for 5 mins, and continued the Hibernation resume into Windows (did not reboot the computer, simply a menu option to continue booting from internal HDD). Reboot after 5 minutes.

4) Went into Hibernation. When computer was off, I removed the power (I know it's powered off when Hibernating, but tried anyways to see if there was a change) and plugged power back in (battery was out). Rebooted in 10:04.

5) This is where it gets spooky:
5.1) Went into Hibernation, PC shut down as normal.
5.2) Powered up, booted into CD boot menu.
5.3) Restarted the computer from the CD boot menu, and removed the CD.
5.4) Booted into Windows (resuming Hibernation as "normal").

Result: No reboot.

To sum it up:
The computer reboots 10:04 mins after hibernation, no matter if I enter a CD boot menu or boots directly into Windows. I think there's some hardware timeout that reboots the PC after 10 mins if resuming from hibernation, no matter if Windows is running or not.

The computer does NOT reboot if I perform a restart from the CD menu, BEFORE allowing the PC to resume hibernation. So apparantly the error is corrected when restarting the computer, even if it directly proceeds to resuming waking up from Hibernation.

I'm stumped - can't figure out what the cause is. Any gurus here who can shed some more light over the subject?