Labview 2010 vi using too much RAM and causing Crashes

hello everyone,
I was given a LV 2010 vi to integrate with another functionality.This Vi is used for a long time on XP and Windows 7 platform having various RAM size.it still runs fine on those PCs. This Vi has functionality that it waits for user to press start button that it reads data and plots.however i am not giving start command and it starts consuming too much RAM and resulting system Crash.
System Config: I have Core i5 CPU 650 @ 3.20GHz with 2 GB RAM and windows 7 .
Plz show some methods to prevent them and why it is happening.?
Note:1) i also checked my ram through windows test and it has no error.
2) windows shows me some low disk error sometimes.
plz help me out here i am stuck here for week.
thanks & regards

Post your VI if you are allowed, we cannot help you without that info...
If you are a beginner in LabVIEW, it will not take 1 day to gain some level. LabVIEW is a full featured programming language, it is very easy to program it wrong. I suggest you to start learn it using the online resources. You have an active LabVIEW licence? If so, you can access the "self-paced online training" via menu point "MyNI", see top of this website just next to your name (you need to connect your account to your licence in order to use the online training). Another option could be to pay for a virtual classroom course, get more info here: http://sine.ni.com/tacs/app/overview/p/ap/of/lang/en/pg/1/sn/n5nline,n24:12725/id/1582/ I did this a few years ago (Core 1 and 2.) and the tutor from NI was very professional, and it was also comfortable since you attend the class via internet from yoour home or workplace.

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