Hi All, Perhaps you guys can help me with this very big, and serious, problem. My computer is unexpectedly shutting down about 15 minutes into using the NGX. When I say shut down, I mean 1 second I'm staring at the cockpit, and the next second the computer is completely off. There is no reboot. When I do reboot the computer, it displays the "windows has not shut down properly" screen. This is the only program that it is happening to...meaning the NGX. I have also noticed that it is only happening while flying at night. I have:-cleaned the computer thoroughly.-Run the full battery of "OCCT" tests with no issues-Performed a full memory test with no issues-Defragmented the hard drive using O&O defrag-Performed a disk check with no issues-Performed antivirus, anti-spyware, and anti-malware scans with no problems found-Let FSX rebuild a fresh .cfg The OCCT tests would have found a problem if there was any with the power supply, cpu, or gpu. I have also monitored the cpu temps, and they did not go above 61°C. The computer:Toshiba A665 laptop 7 months oldIntel Core i3 M370 2.4ghz400GB hard drive4gb RamIntel built in graphics (I know, I know) It's not the fastest computer, but it has no issues running FSX, and I keep the settings pretty low. I have run out of ideas, and I'm bummed that it is happening. Any thoughts before I send it to Toshiba for warranty? Matt LaMay

It most likely could be caused by your specs because they don't even meet minimum requirements fully. Your CPU may be getting a lot of data once you look into the cockpit since it is very detailed and complex. It could be some kind of freezing or so, causing the PC to shut down.

Thanks for the response. The only area that isn't under the "minimum requirements" section is the gpu. In all of the other areas, I more than make up for the shortcoming. Like I stated above, I ran a full battery of OCCT tests (which loads the computer down way more than the NGX could ever do,) and had no issues. Also, your response would make sense if the issue was happening immediately upon loading the NGX, but not after 15 minutes. I also stated that the max cpu temperature that I witnessed was 61°C which is 29°C below TJ max. This is also only happening with the NGX. If your theory was true, why wouldn't it be happening with other addons or games? Is the NGX that much of a resource hog even though PMDG stated that it wasn't? I'm not being argumentative, but rather explaining a little better.Matt LaMay

No problem. I did edit my post after I finished re-reading your question and face palming seeing you tested your temps. :( I did state that your PC didn't meet the requirements fully, but the GPU plays a big role in your case since it's integrated with the CPU. However, performance wise with the NGX, it really has about the same performance as the 747 and the MD-11, but considering the amount of detail in the plane I am amazed at how optimized the code is. But yes, if my theory were true than other GPU/CPU intensive addons would have the same result with your PC. But I think it makes sense, FSX only utilizes one core of the processor to process all of the games core functions, i.e sound, processes, code. In addition to that, info from the game's graphical side is flooding your processor as well, so it would basically be in a choke-hold of data and it might shut itself off to prevent some kind of damage. Pretty much all I have to say, but just one question. Have you updated with the hot-fixes? Just wondering since you didn't state in your original post. Happy to help :D

I also stated that the max cpu temperature that I witnessed was 61°C which is 29°C below TJ max.

Are you monitoring the temp during FSX or OCCT?

It is more likely that your Graphics Processor is overheating and causing your shutdown. (1) See if you can find a compatable Graphic Processor temperature monitoring program.(2) Find a good, Graphics Processor "Stress Test" diagnostic, and run it. Ideally do both, comparing the temperature running FSX+ PMDG737, and the stress test. -----Just because your system does not fully mean the recommended specs, does not mean it should "lock up" and crash, as it appears to be doing. You imply it is a TIME thing ( 15 minutes) , rather than when you are doing any particular activity, ie Take off, flyng over complex scenery. Most Laptops do NOT have the best GPU cooling. I bet the air coming out of your :aptops cooling vents is very hot, when it crashes ?? I know when I run FSX on my Laptop, the exhaust air gets very hot. Sometimes I think there must be a REAL jet engine inside it !!!

I downloaded Furmark to test the gpu, and it had no problems running it. I also ran another Linpack test via OCCT tonight, and again had no issues. I will try another flight tomorrow and monitor all the parameters again. The previous test did not have the hotfix applied, but tomorrow's will. Matt

Had the exact same problem, and did everything you did, and eventually narrowed it down to the sound card, which was something I overlooked during tests. Try the following and post back.1) load FSX In a default aircraft and hit 'q' to mute sound.2) quit FSX to save the mute flag for next startup 3) load up the NGX and see if it still does itSeemed to fix it for me - I'll try and get the link to my post. Otherwise I'd probably say the graphics on your rig is the weak link. Now I have to put up witha completely silent flight :(- Peter

If you had a desktop I'd say 90% it's not enough power supply juice or a faulty power supply. For a laptop, it's almost certainly overheating, it could be because you are running it beyond it's normal/ maximum capacity or there's too much dust in the vents or the environment temperatures are too high causing a shut down. I've seen it happen many many times.Chris Farrell

hi i had this prob too but this didnt happen when i was using fsx it happens when playing online games etc like swat4 sometimes when i plugged in my usb cam it shut down completely with out warning took it to the pc shop even happend when i was showing the pc guy he couldnt find the cause of it he probably said it probably due to some thing on the motherboard so since the pc was getting old got my new pc built so it doesnt mean the ngx is causing the shutdown as my experince it didnt happen to me , the power supply was good since it was replaced