1.  To stop all HASH/APPCRASH CTD's, I turned off Data Execution Prevention at the system level, and rebooted.

 

2. Read on the www.crucial.com site (Crucial Memory) that they did a study and found that the largest system memory hog, is the user using any form of a web browser.  Yes...a web browser.  Check it out on their site.

 

http://forum.crucial.com/t5/Standard-DRAM-Memory-Knowledge/What-s-eating-your-memory-It-could-be-your-browser/ta-p/56710

 

If a user's M.O., is to read and browse perhaps on the WEB, and then at some interval in his/her user session, will fire up FSX, it is more than likely, that you have very low memory that has not been reserved and, has not been released back into the general pool. You fire up FSX, take a flight, and at some point in your FSX session, you have a O.O.M. CTD.

 

The way to avoid this, is by changing the way you use your computer and to sim.   If you wish to start FSX, I advise that you totally reboot your system, and only then, start up FSX and all the other associate programs you use with it.  Do nothing else with your system (like pause FSX, and go to the browser), but fly.

 

I bet dollars to doughnuts, that your O.O.M CTD's will no longer rear its ugly head.  I have tried this with 6 GB of system memory as well as 12 GB's, and both system memory amounts do not produce O.O.M.'s as long as you start FSX from either a computer initial start up, or a dedicated REBOOT, so you can fire up FSX right after a desktop screen opens up.

 

So,  try turning off Data Execution Prevention (you need to, to have FSX not be running behind this) as well as never opening a browser program before you fire up FSX.  

 

Again, check out Crucial's site, and find the article with graphs that show that a Web Browser is the number one offender program to tie up memory resources and not release them in any given computer user's session!

 

Hope this helps. It sure cleared up CTD's for my system...... 

How do you turn off DEP? I get FSX stackhash/BEX errors when i try to overlock my 3570K more than 4.3 ghz.

How do you turn off DEP? I get FSX stackhash/BEX errors when i try to overlock my 3570K more than 4.3 ghz.

Follow the instructions below, and then reboot.  You can also turn it back on with these instructions should you wish to.  I have had it off, and have had no further stack/hash/appcrash, due to DEP not liking, or recognizing one of my scenery or running FSX related programs at any given time of FSX usage.  It cured them all....

 

 

If DEP's analysis of a process startup execution makes DEP think the resulting code will cause some sort of unwanted activity, DEP intervenes and shuts down the process.

 

It sounds good in theory, but DEP also shuts down legitimate programs such as FSX and FS9 in some cases.

 

If you have adequate defenses in place, DEP won't really provide you any benefit and will likely get in your way. You can turn it off completely.

 

Turning DEP off requires the use of the command prompt space. 

 

1. Open the Start menu, and in the search box, type "Cmd" and wait for the results box to populate. 

 

2. Right-click on the cmd shortcut that appears and select Run as administrator. You'll probably have to acknowledge a UAC prompt to get it done unless you have already turned UAC off.

 

3. Once you're at the command prompt, type the following:

 

4. bcdedit.exe /set {current} nx AlwaysOff

 

You should get a success message back. 

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If you ever want to turn it back on, use the same procedure to get to an elevated command prompt, and then type:

 

bcdedit.exe /set {current} nx AlwaysOn

How do you turn off DEP? I get FSX stackhash/BEX errors when i try to overlock my 3570K more than 4.3 ghz.

 

DEP is the symptom, not the problem. If you are getting DEP errors then something in memory is getting corrupted and you need to solve that, not tell Windows to stop warning you about the problem.

 

Cheers!

Luke