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Blue Screen After 15 minutes

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My FSX ran flawlessly until recently started getting blue screen crashes. They have become standard after 15 minutes of flying the NGX with ASN. When the blue screen appears, there is a message up top that says

 

" A Clock interrupt was not received on a secondary process or within the allocated time interval"

 

Then a crash memory dump is performed and then I have to restart the computer.

 

I have not been able to fly for more than 15 minutes for several days now.

 

Any help would be appreciated.

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Take a look into the Avsim's CTD Guide v3. You can find it in the "hot spots" section, it was recently updated.

Good luck, Ed

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blue screens, especially on a system that was recently stable, often point to an impending hardware issue. if the error occurs after a fixed amount of time perhaps your videocard or cpu are gradually overheating. i'd double check that the fans aren't dusty and still spinning well and look at the temperatures..

 

cheers

-andy crosby

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The AVSIM CTD Guide has a section on Blue Screens with pictures.  Please download BlueScreenViewer and post the bugcheck code and the names of the files associated with the crash here and I can tell you exactly what is wrong.

 

Best regards,

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Thank you so much guys, Jim, before I saw your reply I read the other gents replies. I am afraid Andy is right. I set my air conditioner on very cold last night after I read his post, and the FSX ran flawlessly for two hours until I turned off the air conditioner and the room got warm. That was the first time in weeks that I had been able to fly,

 

So, today I disassembled my computer after two long years. You guys are going to whip me here I should not be telling you this. I had never cleaned it and it sits on the floor. Both fans on the cooling system radiator were DIRTY. All the fans on the case--same thing. Both fans on the GTX 780ti same thing. Very carefully I cleaned each and every one of the blades. I've got it up and running now and I am going to give it a try. After that test last night I am almost convinced that, as Andy says, the system after running stable begins to warm up and then I get the blue screen. I snipped the error after I downloaded BlueScreenView but have not learned to upload the photo yet. EDIT, here it is.

 

http://uploads.im/lJQND.png

 

 

27559849071_60dfd162cc_z.jpg

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Cleaning out the computer will help but not necessarily fix the problems associated with your BSOD's.  Bugcheck 0101 indicates a possible heating issue but also a hardware driver issue too.  Same goes with the 0124 bugcheck.  I would recommend you run a driver update program to see if you have any out-of-date drivers.  See page 15 of the AVSIM CTD Guide.  If up-to-date and you still get the BSOD's, then lower your overclock next.

 

Best regards,

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Thank you Jim, I have been able to fly long hours since I cleaned the computer. How likely is it that the heating issue was causing the other issues ?

 

I have NVidia drivers 353.06 for my GTX 780ti, can you recommend a better one ?

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Thank you Jim, I have been able to fly long hours since I cleaned the computer. How likely is it that the heating issue was causing the other issues ?

 

I have NVidia drivers 353.06 for my GTX 780ti, can you recommend a better one ?

Seeing the driver usbehci.sys indicates a corrupted or missing Windows usb driver.  I would run the Windows System Check to search for missing/corrupted Windows files.  Details are in the AVSIM CTD Guide, page 13 but here is a link on how to check - https://support.microsoft.com/en-us/kb/929833

 

It could also mean a bad driver for any controller plugged into a USB port.  I would recommend running a driver update program (freeware) to see if you have any outdated hardware drivers (see page 14, AVSIM CTD Guide).  I use Driver Booster which is totally free but has nags to try to get you to purchase a license but it is still free. 

 

If you are overclocked, here are some BSOD Codes (bugchecks) and possible solutions.  In your OP, the error code did indicate your system is unstable.

 

CODE    Solution

0x101 - More vcore

0x124 - Increase or decrease QPI/VTT first, if not increase or decrease vcore. Test to see which one it is. On i7 45nm, usually means too little VVT/QPI for the speed of Uncore (https://en.wikipedia.org/wiki/Uncore). On i7 32nm SandyBridge, usually means too little vCore

 

Best to just bring your overclock back a couple of notches.  For instance, if you are overclocked to 4.4GHz, bring it back to 4.2GHz.  Or, if not familiar with overclocking, just bring your BIOS back to the Optimal Defaults.

 

I use the latest NVidia drivers released and have never had any problems.  The AVSIM Hardware Forum has many recommendations in regards to drivers for video cards and the people who post there are usually more knowledgeable than me regarding this hardware.

 

Best regards,

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Thank you Jim, my system is an I7 4790K OC'd from Cyberpower PC to 4.8 Ghz. I know nothing about overclocking.

 

I am going to go through with it as I had previous these heating errors before I try to fix anything else. Doing fine now.

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Seeing the driver usbehci.sys indicates a corrupted or missing Windows usb driver.  I would run the Windows System Check to search for missing/corrupted Windows files.  Details are in the AVSIM CTD Guide, page 13 but here is a link on how to check - https://support.microsoft.com/en-us/kb/929833

 

It could also mean a bad driver for any controller plugged into a USB port.  I would recommend running a driver update program (freeware) to see if you have any outdated hardware drivers (see page 14, AVSIM CTD Guide).  I use Driver Booster which is totally free but has nags to try to get you to purchase a license but it is still free. 

 

If you are overclocked, here are some BSOD Codes (bugchecks) and possible solutions.  In your OP, the error code did indicate your system is unstable.

 

CODE    Solution

0x101 - More vcore

0x124 - Increase or decrease QPI/VTT first, if not increase or decrease vcore. Test to see which one it is. On i7 45nm, usually means too little VVT/QPI for the speed of Uncore (https://en.wikipedia.org/wiki/Uncore). On i7 32nm SandyBridge, usually means too little vCore

 

Best to just bring your overclock back a couple of notches.  For instance, if you are overclocked to 4.4GHz, bring it back to 4.2GHz.  Or, if not familiar with overclocking, just bring your BIOS back to the Optimal Defaults.

 

I use the latest NVidia drivers released and have never had any problems.  The AVSIM Hardware Forum has many recommendations in regards to drivers for video cards and the people who post there are usually more knowledgeable than me regarding this hardware.

 

Best regards,

 

You know what Jim ? I think that you were spot on. I continue to have trouble, and discovered that my fix was temporary and simply due to the undoing and redoing the connection work.

 

But after a while the blue screen appeared again, and I say one of the lights on my USB bus go out. I have all my GoFlight stuff USB's connected to the bus, and there is a fault there. It was the yoke's USB, that I later connected directly to the computer and bingo no more problems.

 

Is this consistent with your suspicions I think most definitely so. Any suggestions for a better USB bus ?

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Is this consistent with your suspicions I think most definitely so. Any suggestions for a better USB bus ?

 

My suggestions are based mostly on what I have seen around the Internet when individuals have unexplained BSOD's or crashes.  I would just make sure the USB port is up-to-date.  There are many USB hubs out there if you need one.  Most computers have more than one USB port though and you can simply move a device from one to the other to see if this fixes the problem.

 

Best regards,

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When I first read the OPS complaint I suspected a temperature problem. I've seen that several times causing a BSoD.  

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Jim, I have not done anything of what you suggested because the system ran fine for a good while. And before I have the overclock loaded, I wanted to see if with these bugcheck codes maybe you can pinpoint to the problem easier. I suspect of a USB. Sorry to come back to this but maybe you know exactly what is going on with this ?

 

As you can see, it involves all 0124 and the same driver .exe

 

[url=https://flic.kr/p/LhCUFH]29067962991_f441b11495_o.png[/url

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According to: http://www.pcadvisor.co.uk/how-to/windows/how-fix-ntoskrnlexe-bsod-3613143/ The ntoskrnl.exe BSOD is usually related to memory. In this case could be bad RAM or from overclocking. Its summer which means higher temperatures could cause overheating. If CPU is working overtime without good ventilation then you could have heat issues.  You should try reducing clock temp. and maybe even swapping mem sticks.

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I have all my sceneries and airports checked in the scenery library. Do these all load no matter where I am flying ? I am going to try unchecking and leaving only what I will use.

 

 

 

EDIT: that did not work, unchecked everything and still the exact same issue. Thanks for the memory and overclock tip. I wanted to see if something could be done before I mess around with the overclock.

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I checked my temperatures using tech inferno on a flight that I was able to complete. The first two cores always ran hotter, with the second one the hottest peaking out at 75 celcius. I am sure that on other flights the scenery has been more demanding with more weather. My Haswell I4790K is OC'd to 4.8 GHZ with a core voltage of 1.40V using CPU-Z

 

I am going to work on updating my drivers like Jim suggested. I ran the system checker for corrupted or missing files and everything is up to date.

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The first thing I'd do is get rid of the overclock, then work your way back up if you're stable.

 

Cheers!

 

Luke

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Before I update the drivers, I want to show this. The second core always runs hotter than any. I was able to complete this flight however note that at 18:28 first three cores spiked at the same time, with the second at 79 celcius. I am nonw almost certain that it is one of these spikes above 80 that causes the BSOD. I want to mention also that the second core jumps from 49 to above 70 in the readings--there is no 50's or 60's in between while the others might be there. Why is this core running hotter ?

 

I also want to mention that I have absolutely no experience tinkering with overclock or the BIOS, and feel very uncomfortable doing it. Any help would be appreciated.

28880181310_c35c4592e7_o.pngCapture

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Before I update the drivers, I want to show this. The second core always runs hotter than any. I was able to complete this flight however note that at 18:28 first three cores spiked at the same time, with the second at 79 celcius. I am nonw almost certain that it is one of these spikes above 80 that causes the BSOD. I want to mention also that the second core jumps from 49 to above 70 in the readings--there is no 50's or 60's in between while the others might be there. Why is this core running hotter ?

I also want to mention that I have absolutely no experience tinkering with overclock or the BIOS, and feel very uncomfortable doing it. Any help would be appreciated.

 

The Thermal Status shows OK everywhere.  So what's the problem?  Makes no difference if a core runs hotter than others.  It's still OK according to RealTemp.

 

Benchmark programs and RealTemp programs have been found to be unreliable by me.  I have ran them all when I had issues and they all passed with flying colors.  Then, I run FSX and it crashes.

 

So you have no idea how to overclock but you have the i7 4790K overclocked to 4.8GHz. (100 x 48).  So, how did you get it overclocked to 4.8 because that is not a normal overclock.  Any computer overclocked and especially up to 4.8 is subject to many issues.  It is difficult to overclock to 4.8 unless you know exactly how to set the CPU and vcore voltages.  So, since you have no experience tinkering with and overclock or the BIOS, an "expert" must have overclocked it for you.  You need to go into the BIOS (usually by hitting the DEL key or F2 key several times while the system is booting up), and reset the setting to Optimized Defaults.  Or you can go into the BIOS and change the 48 to a 42.  I recommend the optimized defaults.  Had I known you had your system overclocked to 4.8GHz earlier, I would have recommended this immediately.  Overclocks are bad if not done properly.  They will work for a month or two but it will eventually give you issues if not done properly.  I know this for a fact as it has happened to me on many occasions and returning it to optimized defaults fixes the problem every time. 

 

Best regards,

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:bad:Yes Jim  (SIGH!!) , I had it done from Cyberpower PC where I bought the computer. It came that way and has worked flawlessly for over 2 years now. I have been doing more reading and see that this is an abnormal overclock and this processor runs very hot. I also read that in all likelihood they used 22 celcius as ambient temperature for the OC, and I have been flying here at 26 celcius. So I turned up my air conditioner to get 22C ambient, separated my Tower from the wall some more, and surprisingly the same flight same weather and airplane with this ambient temp now yielded the following temperatures:

 

29091115461_265d17801f_o.pngCapture

 

 

Luckily no issues, but it is too early to tell for sure. I am sorry Jim if I made you waste your time, hopefully this thread will be a reference to other folks. If I have any more BSOD's I will report back after I change the overclock. But just wanted to show what a difference in core temperatures I obtained with the difference in ambient temperature and better breathing by the case.

 

P.S. I mentioned in post #9 the 4.8 GHZ overclock.

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If you get another ntdll.dll crash or 0124 BSOD, I can say for almost certainty, it is the overclock that somehow got corrupted.  As I stated (and also in my CTD Guide), I have fixed the ntdll.dll error many times by lowering my OC or going back to the Optimal Defaults.  When I get a BSOD with the bugcheck code of 0124, I immediately know what caused it.  My overclock.  I'm not an expert at overclocking but playing with the BIOS is my forte'.  When I overclock, I search Google with a question like "how do you overclock an i7 4770K on ASUS z87" or something like that and I get JJ from ASUS giving me instructions on YouTube -   https://www.youtube.com/watch?v=Z7zPu9255ZI

 

So, if you run into problems again, I suggest you try that too.

 

Best regards,

Jim

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Jim, I got another BSOD so I took the courage up to access the BIOS and found the modification on "last modified" in July 2014, where I found this

 

28582089243_bc68d97809_k.jpgBIOS MOD

 

 

So I went ahead and only messed with two things: Instead of the 48 went down to 46, and in the manual core voltage brought it down from 1.40 to 1.30, and saved the changes so I now show this in Realtemp:

 

29124030081_1c3d054678.jpgCapture

 

Obviously I have the computer up and running with browser writing this but before I load it with FSX wanted to ask you if this wont break anything. If I get more BSOD's naturally my next step is to lower some more.

 

I watched the video you suggested and others, and learned that for each 100 MHz you bring down you can bring voltage down 0.05 so that is what I did.

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More news, I fired up FSX and made what had thus far been an unforgiving flight to KSEA loaded with ORBX scenery and T2Gate KSEA. Sunshine and clear skies in Seatle this morning , but even as I approached the airport the highest temperature recorded with the new settings at 4.6 GHZ was only 69 Celcius, and no air conditioner in the room--about 26 Celcius ambient. The performance hit is a bit noticeable but with that scenery nothing is enough. If this runs stable for a good while I might try pumping up to 4.7 GHz and 1.35V, though I have seen from ASUS that there is almost no way to cool over 1.30V adequately.

Thank you Jim for pushing me to do this. I am gaining confidence.

28581280024_1d3c835846.jpgCapture

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Thank you Jim for pushing me to do this. I am gaining confidence.

 

It's how I learned to tell others.  High overclocks like your 4.8GHz can sometimes become very unstable.  I have my OC down to 4.2 GHz and have seen no problems for a super long time and no ntdll.dll errors.  I personally do not see any performance improvements with major overclocking.  Just more frustrations.

 

Best regards,

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