Dire need of help please. SOLVED!

[727737Nut]

I have exhausted all my ideas and am now reaching out to my fellow sim enthusiasts .

The Problem, after flying 20 to 30mins my X-Plane software stops responding and the only way to get out of it is unplugging the PC!  Restart PC right away and the cycle starts again. 
Nothing in the LOG text file about any reason why it stops.

Here is what i've done for troubleshooting,

Went back to 10.36, Same result. 

Completely removed X-Plane and reinstalled. Same result

Updated new install to 10.36 then 10.40b11  Same result

Moved install from SSD drive to standard 7200 rpm HDD,  Same result

Cleaned PC, Installed HW temp monitoring software, Re-applied new heat compound to the CPU,
increase fan speed on GPU,  Temps all well below high thresholds, I can touch the GPU, CPU, RAM, and MB heat sinks and all feel barely warm at most.   Same result. 

Now here is where it gets really weird.
Fired up P3D, flew XXXX 737NGX and after an hour, same result! But, on reboot, flew for 5 hours straight!!! No fail.

One other weird thing happened tonight, X-Plane locked up, I was able to hit the windows key on the keyboard and actually get into folders and look around all the while x-plane still stuck in the back ground.  I tried control alt delete, tried killing the application, nothing worked.  Had to unplug pc again.

My GPU is an Nvidia 6600TI 2G ram, 337.88 driver

PC
WIN 7
I5-2500K
8G GSkill Ram
2 SSD drives and one large std HDD
ASRock Extreme 4  P67 mobo

I don't know where to go from here with it.
Thanks for any ideas,
Rob


Update as of 9/8/2015   Turned out to be an intermittent bad SSD   The reason P3D ran with no isses it was on a different HDD.

[mickc]

Try swapping the RAM modules if you have any spare, or swap between slots if you have multiple modules.

When a PC locks like that and temps aren't an issue, its often a faulty memory module.

[quid246]

I second Mick's advice.. could be hitting a bad RAM block or something.

[MCrevot]

Yes, first thing is to run memtest86.
You can also run OCCT to confirm.
Michel

[kurt-olsson]

What the other said, try switch ram in your computer.

[Bob Reed]

Video card issue.

[727737Nut]

First test today, disconnected the SSD drive  and did a 1 hour flight today before I headed ut for holiday festivities   X-plane worked fine,  Looking like i have a bad SSD drive after 5 years of hard use.  Will test more tomorrow and report back

Rob