hi this probably wont fix ur prob but it mite i see that u got ur fsx under d:\games\fsx its advised to have fsx in its own root drive eg d:\fsx

This is not necessary. It only is necessary to avoid installing fsx into the default 'programs and features' folder. Other than that, it does not matter at all.

Hi! My system specs are:i7 2600k @4.5Ghz4gigs 1600Mhz DDR3Geforce 560tiFSX installed under d:\games\fsx (500Gb Seagate 7200rpm drive)Win7 Ultimate 64bit with UAC switched off The first thing i notice on your system is the RAM - you have a 64-Bit Win7 and an i7 2600k - why just use 4 gigs of ram, push your system with some more ram. That's a general advise you cant do anything wrong spending your System more ram. Win7 will handle it well and it helps increase loading times dramatically nad you dont need to swap data between hd and ram (often this alone will take away most of the problems with fsx). NExt thing i would try is not to overclock the system. go down to the standard-rate and look if your fs runs more stable than. Ive red in several forums that wrong overclocking options can cause really heavy problems.There are known issues with intels speed step technologie because sometimes the cpu is underpowered if you manage the voltage through the automatic option. Dont nail me here, im no hardcore-overclocker but ive red that manual adjustment of vcore is necessary to get a stable overclocked system for fsx. and dont compare the 737ngx with your other add-ons. You need good hardware for this bird and hardware which is fine for other add-ons is not enough for the pmdg:). Maybe this helps you,good luck,regardsChris

Hi Chris thanks, This machine has run at a stable overlock for quite a while now, and I have seen considerable gains in FSX because of it. Just for interest sake, I set the system back to stock to test if that was the cause for the undesirable circumstances with the NGX, but unfortunately the same thing happened, so I doubt it is that. I do agree with you that more RAM will help, but sincerely doubt that that is the culprit here as the machine as it is runs FSX and the other PMDG products very well. I am trying to get my hands on some more RAM to test with. Thanks for the tips thoughRob

hi this probably wont fix ur prob but it mite i see that u got ur fsx under d:\games\fsx its advised to have fsx in its own root drive eg d:\fsx

Should not matter as long as it is not in the default Windows Programs folder. I have it at 'Z:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X' and it works perfectly.

I`ve read now a lot about the freeze issue and while i myself dont have any problems at all i wondered for one thing: I understand that a software product for PC based system has to able to handle a lot of possible different hardware combinations. I myself had to replace my system after my mainboard died on me 2 weeks before release of the NGX, providing me with the (actually unwanted) possibility to get the recommended Intel 2600K, 560Ti, Win 64, 8Gbyte Ram system after what feels like reading 1000 posts about a good system spec. Anyhow - because of that - i started totally clean and had no problems at all activating or running the NGX from day 1. Now even with a ton of sceneries, tools (weather, textures...) and other aircraft addons installed - it runs without problems. I`ve never even installed any hotfixes yet since i do see the need. Since it seems, that the freezing not necessarily can be pinned down to certain hardware (ATI vs. NVIDIA, Dual Core vs Quad core, XP vs. Win7, ....) i wondered for one thing i`ve never seen anybody mentioning or even normally being pointed at in system specs... Is the power-supply sufficient? A lot of people are saying, their system is OC and tested for stability - but does the test include graphics like using the 3DMark benchmark? If not - it can be stable as hell using simple CPU stress tests but under game conditions including a loaded graphic board the situation might change since the supply output voltage is dropping if exceeding certain load levels. While mainboards can handle a certain amount of changes in the supply, i don`t know about the capability of graphic boards and these days the power required under load by NVIDIA or ATI is huge. Even though, e.g. NVIDIA states that they recommend/require a certain amount of available power (e.g. >500W supplies) that statement does not consider the extra amount of power required by the CPU when OC. So a 500W or even 550W supply might just not be sufficient for this task under OC conditions. Especially also considering that max power supplied is distributed between different output voltage levels (e.g. 12V, 5V...) If the system additionally houses a couple of hard drives, more than one optical drive, a bunch of system fans... that is all just adding up... and getting close to complex sceneries is probably increasing the load on the CPU and the graphic board too and consequently the amount of power consumed. Another question concerning this matter... are these freezes after e.g. loading happens no matter where the plane is placed or are people tying to start at MEGA AIRPORT EDDF (worst case scenario) all the time? Don`t get me wrong - i just want to point out another possible weak point in a lot of systems. I myself decided for a 600W power supply and everything runs just fine. Nico A.

and dont compare the 737ngx with your other add-ons. You need good hardware for this bird and hardware which is fine for other add-ons is not enough for the pmdg:).

This is a sweeping statement with which I totally disagree. I have a Core2 Quad Q9650, 4GB RAM and a Geforce 9600GT 512MB. The NGX runs better on my system than the MD11X or the JS4100. By better I mean slightly higher frame rates but a lot smoother. Iain Smith

I`ve read now a lot about the freeze issue and while i myself dont have any problems at all i wondered for one thing: I understand that a software product for PC based system has to able to handle a lot of possible different hardware combinations. I myself had to replace my system after my mainboard died on me 2 weeks before release of the NGX, providing me with the (actually unwanted) possibility to get the recommended Intel 2600K, 560Ti, Win 64, 8Gbyte Ram system after what feels like reading 1000 posts about a good system spec. Anyhow - because of that - i started totally clean and had no problems at all activating or running the NGX from day 1. Now even with a ton of sceneries, tools (weather, textures...) and other aircraft addons installed - it runs without problems. I`ve never even installed any hotfixes yet since i do see the need. Since it seems, that the freezing not necessarily can be pinned down to certain hardware (ATI vs. NVIDIA, Dual Core vs Quad core, XP vs. Win7, ....) i wondered for one thing i`ve never seen anybody mentioning or even normally being pointed at in system specs... Is the power-supply sufficient? A lot of people are saying, their system is OC and tested for stability - but does the test include graphics like using the 3DMark benchmark? If not - it can be stable as hell using simple CPU stress tests but under game conditions including a loaded graphic board the situation might change since the supply output voltage is dropping if exceeding certain load levels. While mainboards can handle a certain amount of changes in the supply, i don`t know about the capability of graphic boards and these days the power required under load by NVIDIA or ATI is huge. Even though, e.g. NVIDIA states that they recommend/require a certain amount of available power (e.g. >500W supplies) that statement does not consider the extra amount of power required by the CPU when OC. So a 500W or even 550W supply might just not be sufficient for this task under OC conditions. Especially also considering that max power supplied is distributed between different output voltage levels (e.g. 12V, 5V...) If the system additionally houses a couple of hard drives, more than one optical drive, a bunch of system fans... that is all just adding up... and getting close to complex sceneries is probably increasing the load on the CPU and the graphic board too and consequently the amount of power consumed. Another question concerning this matter... are these freezes after e.g. loading happens no matter where the plane is placed or are people tying to start at MEGA AIRPORT EDDF (worst case scenario) all the time? Don`t get me wrong - i just want to point out another possible weak point in a lot of systems. I myself decided for a 600W power supply and everything runs just fine. Nico A.

Hi Nico, In my case, I am running a 1000W power supply, that runs FSX and the PMDG747 and JS4100 perfectly, every other game that I have tried I can run at the highest or nearly the highest settings, so it is highly unlikely that it is causing the issues. It is only the 737NGX that has given me some grief. I must commend the support team now, they have been helping me troubleshoot the problems, and are giving me solutions to try all the time! Thanks for the tip though!RegardsRobert

I`ve read now a lot about the freeze issue and while i myself dont have any problems at all i wondered for one thing: I understand that a software product for PC based system has to able to handle a lot of possible different hardware combinations. I myself had to replace my system after my mainboard died on me 2 weeks before release of the NGX, providing me with the (actually unwanted) possibility to get the recommended Intel 2600K, 560Ti, Win 64, 8Gbyte Ram system after what feels like reading 1000 posts about a good system spec. Anyhow - because of that - i started totally clean and had no problems at all activating or running the NGX from day 1. Now even with a ton of sceneries, tools (weather, textures...) and other aircraft addons installed - it runs without problems. I`ve never even installed any hotfixes yet since i do see the need. Since it seems, that the freezing not necessarily can be pinned down to certain hardware (ATI vs. NVIDIA, Dual Core vs Quad core, XP vs. Win7, ....) i wondered for one thing i`ve never seen anybody mentioning or even normally being pointed at in system specs... Is the power-supply sufficient? A lot of people are saying, their system is OC and tested for stability - but does the test include graphics like using the 3DMark benchmark? If not - it can be stable as hell using simple CPU stress tests but under game conditions including a loaded graphic board the situation might change since the supply output voltage is dropping if exceeding certain load levels. While mainboards can handle a certain amount of changes in the supply, i don`t know about the capability of graphic boards and these days the power required under load by NVIDIA or ATI is huge. Even though, e.g. NVIDIA states that they recommend/require a certain amount of available power (e.g. >500W supplies) that statement does not consider the extra amount of power required by the CPU when OC. So a 500W or even 550W supply might just not be sufficient for this task under OC conditions. Especially also considering that max power supplied is distributed between different output voltage levels (e.g. 12V, 5V...) If the system additionally houses a couple of hard drives, more than one optical drive, a bunch of system fans... that is all just adding up... and getting close to complex sceneries is probably increasing the load on the CPU and the graphic board too and consequently the amount of power consumed. Another question concerning this matter... are these freezes after e.g. loading happens no matter where the plane is placed or are people tying to start at MEGA AIRPORT EDDF (worst case scenario) all the time? Don`t get me wrong - i just want to point out another possible weak point in a lot of systems. I myself decided for a 600W power supply and everything runs just fine. Nico A.

You know, that is the first time I've seen someone address power, and you're spot on with that info. This is an under addressed issue that everyone should consider. Systems built or modified with gaming in mind (FSX) that have moderate power supplies (500W) are likely to run into unexplainable problems. NewEgg has an pretty good power supply calculator. The link is: http://c1.neweggimag...powersupply.jpg It's already been mentioned, but bares repeating that an overclocked system that's stable with other programs (even test programs) may very well not run well with FSX and the NGX. I've seen this too many times not to be sure of this. If one is having problems running FSX/NGX with an overclocked system, it's best to go back to CPU/RAM/GPU defaults and work your way back up to the best settings. Also, HEAT comes into this. An overclocked system may run fine, and may even run FSX/NGX fine for a while, but when the heat gets past 90 degrees C you can experience some crazy stuff, so overclocked systems should always have a temp monitor with alarm running in the background. For my system, I never want to run hotter than 80 degrees C, and will clean/change my fan filters, fans and CPU cooler if I start to see higher temps than 80C. Also, I don't see a lot of discussion regarding the DLL.XML file here in the forums. PMDG (and other addons) installers are somewhat notorious for changing the format and even moving things around, which always results in problems. A incorrectly formatted DLL.XML file will cause all sorts of problems, but sometimes you really have to be watching to see indication of the problem. PMDG (and a few other places) has documented this extremely well (nice job guys!). Here is the link to the PMDG info on FSX's DLL.XML: http://support.preci...leshooting.aspx Hope this helps. Dave

You'll know if the PSU is not sufficient - it will start to get hot and the computer will malfunction. If you can run FSX then the PSU is adequate. You will also find the PSU protections kicking in if it is too small (e.g. over-current and thermal cut-outs). I see the OP has an over-clocked system. He might want to try setting everything back to stock and seeing if he did any harm to his computer. If the processor could run that fast reliably you can be assured Intel would sell them that way... Best regards,Robin.

PMDG (and other addons) installers are somewhat notorious for changing the format

I think that is a tad unfair as far as PMDG are concerned - I have all the PMDG addons bar one and have never had an error in the dll.xml file caused by them. Now a certain 737 classic developer is another matter.

Well, I now have a working NGX aircraft... I had to do a full re-install of FSX and Acceleration, but now it seems to be working! YAY! Something was screwy with the config of my FSX which come right after the re-install! I have not installed any other add-ons just yet, I want to play around with this one to see how it goes!!Thanks for all the tips and advice... I am really pleased to be able to get her running! Woo hoo!

Another win for the team!