Fresh install, random 100% drive usage and system wide lag.

Hi there, i just fresh installed Win 8.1 after having the issue of a svchost thrashing 100% disk access for minutes at a time and lagging whole system inc mouse pointer to the point that apps and games start to crash and the issue has not gone away.
I had also had the issue on old pc using different drives.
This is the 4th system where ive seen this behaviour in Win 8 since launch and was wondering if there is a fix yet? It happens on my 2 pc, my mothers laptop and a friends desktop, all with different hardware, 2 factory installs and 2x fresh installs
from untouched iso's.
It happens randomly when nothing is running on pc or sometimes when gaming or using apps and makes the desktop unresponsive for minutes at a time and sometimes crashes apps with it due to the system wide lag. Even ctrl alt deleting can take several
minutes for the menu to appear or even start Task Manager.
Ive managed to catch 1/2 the issue with procmon but due to taking so long for apps to launch while the lag happens i can only get the last 1/2 of the trace which shows a mix between a svchost, explorer.exe and wmiprvse.exe thrashing the system to a standstill
while accessing almost every file and reg key on the disk to over a million events recorded in procmon.
IS there a fix for this or a way to check the procmon trace to see exactly what service or task is causing the thrashing? I think whatever it is is buggy/broken, running at realtime and is blocking anything else from using the system until its done,
which lags the system.
Surely even an overloaded drive wouldnt cause other apps or the mouse to lag/hang so badly to the point of crashing and even Xp or Win 7 wouldnt lag/hang the desktop due to a busy drive.

Gerg
In order to diagnose your problem you will need to download and install the below
Install the WPT (windows Performance Toolkit) http://social.technet.microsoft.com/wiki/contents/articles/4847.install-the-windows-performance-toolkit-wpt.aspx ,
When you have open an elevated command prompt and type the following
WPRUI.exe (which is the windows performance recorder) and check off the boxes for the following
First level triage, CPU usage, Disk IO. If you problem is not CPU or HD then check off the relevant box/s as well (for example networking or registry)
Let it run for 60 secs or more and save the file (it will show you where it is being saved and what the file is called
Zip the file and upload to us on Onedrive (or any file sharing service) and give us a link to it in your next post.
Wanikiya and Dyami--Team Zigzag

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Fresh install, random 100% drive usage and system wide lag.

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