Windows 7 memory leak?

[Plan-B]

well 1st: stop all programs and check the taskmanager
as i did see in your pic world of tanks for example

Close all Browsers (check at tasklist if closed) cause browsergames often make this trouble

the svchost can refer to a tiny Little program which only uses 1 or 2 MB but opens a secondary huge process,

if all programs / unnecessary processes closed wait a Little time - watching the taskmanager may be 10 minutes.
check autostart and scheduled Tasks what they do

the Memory will reduce when you kill all Tasks shown at the taskmanager where owner is "Leam" - they wont deinstall - they just are killed -

when killing a process something to your Memory use will happen - check which one you killed, reduces Memory use - then you found the reason / program causing trouble.

[Valhalla Rising]

MemTest and chkdsk. Google how to do it and drop the results.

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[HeyImRuu]

always check drivers when going to and from win10 to whatever. I've had a lot of my drivers fade to 0's and cause ram issues

[Exploration]

Okay starting from the bottom of this thing. I did a custom install of 7 and used all the drivers for the 64bit version of this OS. Fresh downloads also (Which took me an age but hey-ho). Checkdisk didn't flag up anything as it did this when i installed the OS. On the first boot it prompted me to run it and there were no apparent bad sectors. (The HDD is only a year old and it's kept at 15C at all times). Memtest i can't figure out for the life of me, i'll get back to you on that one when i can find a blank DVD going around. Actually i think i could use a USB for this, though i've had problems booting from a USB in the past.

Closing svchost solves the issue for like 10 minutes before it restarts whatever it is within it. However something weird happens when i do that, various Windows Update icons appear in the task bar along with that 'Upgrade to Windows 10' thingy. I find that somewhat unusual.

[Rebirth]

You got the solution in your own proofpic

http://www.technipages.com/windows-enabl...superfetch
Disabling superfetch will allow you to become a pony... Well disabling it will free your RAM and (hopefully) CPU usage since I am not quite sure where the high CPU usage comes from (will need some event logs but superfetch might solve this issue anyways)

Always make a backup before changing anything on your system...
Never close svchost, since if it would be a virus you would notice it (really...)

@chckdsk and MemTest: Chckdsk is useless in this case. It is used when someone has problems with his HARD DRIVE DEVICE / SSD but DEFINETLY NOT when someone is having RAM and CPU issues like the OP. MemTest too since it does fe the RAM..

EDIT; Two of my PCs (Win 8.1 Pro/Windows 7 Ultimate) had superfetch disabled by default, as side note.
EDIT 2; The reason why mine was disabled on both are the SSDs installed (Using Samsung Magician it disables the feature automatically to improve SSD lifetime)

[Valhalla Rising]

RAM leaks occur when you have faulty RAM aswell, afaik he may've overclocked his RAM and that could start causing the leak. But yes, Superfetch has been giving me troubles on Win10 so I disabled it the moment I saw it pop up on my Task Manager.

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[Exploration]

You got the solution in your own proofpic

http://www.technipages.com/windows-enabl...superfetch
Disabling superfetch will allow you to become a pony... Well disabling it will free your RAM and (hopefully) CPU usage since I am not quite sure where the high CPU usage comes from (will need some event logs but superfetch might solve this issue anyways)

This seems to have done the trick, it went from around 4.5GB (Varied from day to day) of RAM idle to just under 1.8GB (Still a bit high for an idle OS but i do have chrome/skype open so that's prolly what that is.)
I find it strange how something integrated to Windows actually makes it run inefficiently, but i did read something about it being mainly for business orientated software? i'm guessing since this machine primarily runs games it's throwing it all outta wack. But eh anywho, i'll keep an eye on it and see what it does.


Edit: The only thing i overclock is my Nvidia GPU as it comes stock like that anyway. Never even knew you 'could' overclock RAM. I figured the memory speed was determined by the clock multiplier and then from there you get the Mhz value?. But eh, my hardware know how is a little rusty these days.