CrtIsValidHeapPointer (puserdata)

debugging library when I try to start some of my games it comes up with an error message saying that there's a problem with visual c ++

CrtIsValidHeapPointer (puserdata)

Hi khtrans,

Welcome to the Microsoft Answers community.
a. What games you try to play?
have b. you been able to play these games without any problem earlier?
c. Since when are you facing this problem?
d. you do changes to your computer recently?

Check the compatibility of these games with windows 7.
http://www.Microsoft.com/Windows/compatibility/Windows-7/en-us/default.aspx
 
I suggest to perform the clean boot on your computer and check.

From your computer by using a minimal set of drivers and startup programs so that you can determine if a background program is interfering with your game or program. This type of boot is known as a "clean boot".

To perform a clean boot on a computer, follow these steps.

1. click on start, type msconfig in the search box and press ENTER.
 
If you are prompted for an administrator password or a confirmation, type the password, or click on continue.
 
2. in the general tab, click Selective startup.
3. under Selective startup, clear the check box load startup items.
4. click on the Services tab, select the hide all Microsoft Services check box, and then click Disable all.
5. click on OK.
6. When you are prompted, click on restart.
7. after the computer starts, check if the problem is resolved.

Please follow the system in the boot environment. If the problem does not occur, it indicates that the problem is related to an application or a service, we have disabled. You can use the MSCONFIG tool again to reactivate the disabled one by one element to find the culprit.

If your issue is resolved, follow the how to determine what is causing the problem section in KB article to narrow down the exact source.

http://support.microsoft.com/kb/331796 . In addition, see the section on how to restore your computer to a Normal startup mode.

You can also run these games in compatibility mode and check.
http://Windows.Microsoft.com/en-us/Windows7/make-older-programs-run-in-this-version-of-Windows 
 
Hope this information is useful.
Let me know if it worked.
 
Thank you, and in what concerns:
Umesh P - Microsoft Support

Tags: Windows

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