I've had several instances lately, where the FSX simulation freezes up, and at the top of the screen I get the message "FSX Not Responding". I've let it alone for up to 30 minutes after getting the message, only to give up and shut down the program. This only happens when I use the PMDG 747-400 or 747-8. It usually occurs on long haul flights,after about 30 minutes or so, but some flights aren't affected at all. I'm using Windows 7 64 bit, a Quad core processor, an Nvidia 8800 GT video card, and have 4 gigs of memory. I have some scenery addons from FSGenesis, and Ultimate Terrain X, but this problem was happening before I added them. To say the least, it's extremely annoying. Any ideas or suggestions would be appreciated. Thanks.Pete Locascio

Are you using the Highmemfix or the UIAutomationcore.dll fix?If not, I highly recommend using both those if running FSX in the Windows 7 x64 enviornment, as I see you are.In your FSX.CFG file, open it with notepad or eqivalent, under the [GRAPHICS] section add the line HIGHMEMFIX=1.then head over to the tutorial section of AVSIM, under FSX tutorials, look for the FSX WIN7 crash and find the link for UIAutomationcore.dll. Download it, drop it in your FSX root folder, and see if both these working together fix your situation.

Hi Pete, Im not an expert on these matters, but I think the Graphics card you have is a bit out of date. I have the 8800GTS and it sometimes gives up, I am hoping to update to another card come Christmas. Hope this helps. richard welsh.

The program isn't crashing to desktop, it just freezes up with the simulation image still on the screen.There are no fatal error, or any other messages. I doesn't happen when I'm trying to change views, it just occurs randomly. Do you still feel the UIAutomationcore.dll. is the problem, or could it be something else like my video card. Also, what is the HIGHMEMFIX=1., and what does it do? I looked for the FSX.CFG file,but I didn't see a file with that exact name. Where exactly can I find it. Thanks for your response.Pete Locascio

Hi,Some tips here by Bojote here:[/url]http://forum.avsim.n...solution-found/One of the links in that post will give you a lot of info on the HIGHMEMFIX:http://forum.avsim.n...00#entry1746100But I doubt that highmemfix will cure the cause of your problem. But it's worth a shot. EDITED: Forgot to sign with my full name. Sorry :( Ulf Bjarke

Edited November 24, 201015 yr by UlfB

But I doubt that highmemfix will cure the cause of your problem. But it's worth a shot.

I doubt so too, but I suggest it to anyone running FSX in Win 7/Vista. Without it, the sim isnt being run properly.And An upgrade in graphics card doesn't hurt either. One thing you can check on is to see how hot your GPU is running. GPUz will do that for you, just make sure you check the box to have it continue to monitor and update the log when run in the background. If your GPU gets too hot, bad things can happen, like driver crashes.You can find your FSX.CFG in your Appdata folder.Users/[yourusername]/Appdata/Roaming/Microsoft/FSXIf you dont see an appdata folder, you may need to switch your folder options to show hidden folders. HIGHMEMFIX corrects alot of issues people see when running in Vista/7, such as textures go missing, black screen of death. HIGHMEMFIX essentially makes FSX as stable as you saw it in Win XP. There is really no reason to not be using it, you will see absolutely no negative side affects and it will only help you. UIAutomationcore fixes an issue when accessing menus. I can confirm that it works in the described fashion, as without it I am unable to run FSX at all. With it, I never see a crash. Only FSX crash/hang I get it because I am stubborn and still insist on using the ENB Series Plugin, which will always end your sim with a black screen of death if run in full screen mode.Now you dont need to run out and get a Fermi (though if you do, you won't regret it), a GTX 285 will kick FSXs you know what just fine, and you can still use the usepools=0 tweak with that as well, I can confirm that. I highly recommend going to the tutorials and reading up on Bojote's findings. His stuff helps tremendously.

I have to admit my ignorance and truthfully most of the suggestions I've gotten are way over my head. One thing I forgot to mention though is, when FSX freezes I can still hear the audio, its just the video that stops moving.What target frame rate do you suggest. I'm using unlimited as opposed to 30 or 40. Will that overload my video card? Again, please forgive my lack of technical knowledge. I'm just a plug and play type of FSXer. Thanks.Pete Locascio

I doubt so too, but I suggest it to anyone running FSX in Win 7/Vista. Without it, the sim isnt being run properly.And An upgrade in graphics card doesn't hurt either. One thing you can check on is to see how hot your GPU is running. GPUz will do that for you, just make sure you check the box to have it continue to monitor and update the log when run in the background. If your GPU gets too hot, bad things can happen, like driver crashes.You can find your FSX.CFG in your Appdata folder.Users/[yourusername]/Appdata/Roaming/Microsoft/FSXIf you dont see an appdata folder, you may need to switch your folder options to show hidden folders. HIGHMEMFIX corrects alot of issues people see when running in Vista/7, such as textures go missing, black screen of death. HIGHMEMFIX essentially makes FSX as stable as you saw it in Win XP. There is really no reason to not be using it, you will see absolutely no negative side affects and it will only help you. UIAutomationcore fixes an issue when accessing menus. I can confirm that it works in the described fashion, as without it I am unable to run FSX at all. With it, I never see a crash. Only FSX crash/hang I get it because I am stubborn and still insist on using the ENB Series Plugin, which will always end your sim with a black screen of death if run in full screen mode.Now you dont need to run out and get a Fermi (though if you do, you won't regret it), a GTX 285 will kick FSXs you know what just fine, and you can still use the usepools=0 tweak with that as well, I can confirm that. I highly recommend going to the tutorials and reading up on Bojote's findings. His stuff helps tremendously.

Run like on XP? C'mon don't say things that aren't true. Yes for you it obviously helped but as for me nothing changed. Just don't do such a generalisation. ;D

You could try to turn off DirectX 10 preview if youre using that for some reason - and yes, make sure you do the uiautomationcore.dll fix as well.

Run like on XP? C'mon don't say things that aren't true. Yes for you it obviously helped but as for me nothing changed. Just don't do such a generalisation. ;D

On my system, HIGHMEMFIX and UIAutomationcore makes FSX as stable as it was when I ran it in Win XP x64. No disappearing airplanes, no black screens of death, no crashes when using the menus. And there are a lot of people who have the same success as I have had on my system. Are you saying that even with HIGHMEMFIX you can black screen the sim? Are you running the EFB series mod by chance? Because that will screw up the sim in full screen mode not matter what you do.

I have to admit my ignorance and truthfully most of the suggestions I've gotten are way over my head. One thing I forgot to mention though is, when FSX freezes I can still hear the audio, its just the video that stops moving.What target frame rate do you suggest. I'm using unlimited as opposed to 30 or 40. Will that overload my video card? Again, please forgive my lack of technical knowledge. I'm just a plug and play type of FSXer. Thanks.Pete Locascio

Sounds like you are seeing the same issue that has plagued so many simmers running FSX in Vista/7.Like I said before, you add the line HIGHMEMFIX=1 under the line [GRAPHICS]. Open FSX.CFG in notepad, CTRL+F, type in GRAPHICS, it will take you to that section. add HIGHMEMFIX=1, save, and see if that helps.And if you want to limit framerate in FSX, your best bet is to use an external. But if you dont want to go that route, try setting it to half your refresh rate of your monitor. Most likely that would be 30.

- InterestingI have also expierenced something similiar.My screen freezes, and says FSX (not responding)on the top.if i try to do Anything like click on the screen, it goes grey but I can still see whats on the screen. See thru grey i guess you could say.Then fsx crashes and asks me if I want to restart FSX. Any ideas?

Scott, ENBseries effectively negates the HIGHMEMFIX tweak IIRC. That might explain your stability issuesJesús said he would try and edit the ENBs dll to allow it pass the HIGHMEMFIX param, but in the meantime they won't work together

On my system, HIGHMEMFIX and UIAutomationcore makes FSX as stable as it was when I ran it in Win XP x64. No disappearing airplanes, no black screens of death, no crashes when using the menus. And there are a lot of people who have the same success as I have had on my system. Are you saying that even with HIGHMEMFIX you can black screen the sim? Are you running the EFB series mod by chance? Because that will screw up the sim in full screen mode not matter what you do.Sounds like you are seeing the same issue that has plagued so many simmers running FSX in Vista/7.Like I said before, you add the line HIGHMEMFIX=1 under the line [GRAPHICS]. Open FSX.CFG in notepad, CTRL+F, type in GRAPHICS, it will take you to that section. add HIGHMEMFIX=1, save, and see if that helps.And if you want to limit framerate in FSX, your best bet is to use an external. But if you dont want to go that route, try setting it to half your refresh rate of your monitor. Most likely that would be 30.

Scott, ENBseries effectively negates the HIGHMEMFIX tweak IIRC. That might explain your stability issuesJesús said he would try and edit the ENBs dll to allow it pass the HIGHMEMFIX param, but in the meantime they won't work together

That is what I was thinking when I first started to use ENB. And now that you that, it confirms it in a sort of way, thanks for the update. There really is nothing you can do in tweaking the ENB settings to get stability, it just has something to do with the way it acts on the full screen dx window. And knowing that it was originally made for Vice City, can understand why it doesnt play well in the thew Vista/7 environment.I did notice ******* has interest in finding a way to get it to work, which got me very excited. ENB is really a great mod, and adds alot with little to zero hit on FPS.

I'm always surprised when no one suggests overheating in threads like this... that's my first thought here. Check your GPU and CPU temps, make sure no fans have stopped spinning, no dust caking up the fins of the heatsinks etc. Our planes push the system harder than a lot of others do and it's totally possible you'd only see the issue with them because of that. We've seen it before.

This is to CRAS. For me with HIGHMEMFIX=1 I would still get FSX NOT REPSPONDING when using windowed mode when fiddling with the menu toolbar thingy. Not always but consistent enough to make my use of it almost diminish. I have just however put my NVIDIA settings back to default and now load times are extremely fast. And a noticable overall smoothness. Like loading PMDG 747 into LAX takes 7 sec at most. Could be driver not sure. So for me letting NVIDIA be default (as in "let 3D app decide"), using highmemfix=1, and disable preload seems to give best performance and load time for me. Now time will tell if it's more stable.Oh i forgot I now use EXTERNAL FPS limiter which I believe may have helped smoothness. I set at 50FPS.