Windows 7 Memory Usage Goes Up Gradually (Memory Leak)

[raya2]

Memory Usage Goes Up Gradually (Memory Leak)

When I starting the Windows (in the first few hours) everything is normal But after 1 day or 2 (sooner or later) the amount of available memory gradually goes down and the physical memory usage increasing. This increasing, continues until the memory usage reaches near the 88% and at that point , there isn't any memory available to operate any software . Also when memory reaches that point, I can't access any drive in the HDD; because everytime I want to open any folder, the following error appears :

c:\ is not accessible.
Insufficient system resources exist to complete the requested service

At this point, I even can't shutdown or restart Windows normally; I must restart windows manually by pressing the restart button. after restart, everything goes to normal again; but this problem appears again and again ... (I had to restart Windows every 1 or 2 days)

here is the screenshots of processes and performance tabs in the Task Manager (at 88% memory usage)
You can see that there is no software(application) that uses this amount of memory :

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my system :
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OS : Windows 7 x86
Cpu : Intel P4 3.0GH
Vga : nVidia 6600
MB : Gigabyte GA-8I915G Duo
PSU : Corsair 750W
RAM : 2GB DDR-400 Transcend
(I have these memories for 2 years)

Physical Memory: 2000 mb
Paging File: 2000 mb
Virtual Memory: 6000 mb


I already did the following actions but unfortunately none of them helped me :

0- using some optimizing and freeing softwares like (Memory Booster Gold - RAM Saver Pro - CleanMem)

1- Scanning my computer with antivirus and antispywares

2- Changing antivirus software

3- Updating windows with all updates available via Windows Update

4- Updating drivers of all hardwares

5- Downloading and installing the following hotfixes that are related to memory leak :
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A nonpaged pool memory leak occurs when you use a WFP callout driver in Windows Vista, Windows 7, Windows Server 2008, or in Windows Server 2008 R2

So is there anything that I can do to solve this problem ? any solution ? hotfixe ? trick ? suggestion ? anything ? ...

 

[Agent Data]

Do a memory test (memtest86+) first - maybe you gotta leaking ram stick

 

[cybercore]

c:\ is not accessible.
Insufficient system resources exist to complete the requested service

Does it give you an error code with this ?

 

[raya2]

Do a memory test (memtest86+) first - maybe you gotta leaking ram stick

Ok - I will give it a try

Does it give you an error code with this ?

no it doesn't

 

[raya2]

I tried memtest86+ 4.0 but it didn't find any error :

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[raya2]

First : Every time I launch TuneUp Utilities 2010 , It shows me the following error about deleted prefetch folder :
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Second - I found something important related to my problem:
Each time I use my hard drives (copying, cutting, writing, downloading files on any of my 3 hard disks) , the speed of memory leak , increasing.(the memory usage goes up more quickly)
It seems that the source of my problem is related to H.D.Ds.
I already defragged all of my hard disks but it didn't help.
Any other solution ?

 

[jave]

Do a memory test (memtest86+) first - maybe you gotta leaking ram stick

How to run memtest86+ anyway?

(I am a new user afterall)

 

[raya2]

How to run memtest86+ anyway?

(I am a new user afterall)

Downlod and burn the iso to a CD and then boot it up

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