Gameplay freezes

[satty]

Sorry for your time if this is a meaningless thread(this is my first thread)

when I play any 3D game game gets "frozen" after some time displaying the message

Application Error
The instruction at "0x69639e81" referenced momory at "0x1a96bca4". The memory could not be "read". Click on OK to terminate the Program

Why is this happening? What should I do? If this a hardware related problem what piece of hardware(RAM, GPU...etc) should I replace

Thank you very much for your valuable time and help (I cant give you anything in return except gratitude )

 

[EXCellR8]

it would be helpful to list which OS you are using (i.e. Windows XP, Vista, 7 etc...) and which graphics card plus how much RAM you have installed in the system. make sure that you have the latest updates installed and that your drivers are up to date as well.

 

[satty]

My sys info

OS:Microsoft Windows XP Professional (5.1, Build 2600)
DirectX 9.0c (4.09.0000.0904)
DDR memory 1024MB RAM


+++++++++
NVIDIA GeForce FX 5500 128.0 MB

Thanks