My computer is almost a year old and it is a custom build gaming rig with the following specs

Intel Core i5-3570k CPU @ 3.40GHz

8.0GB of Ram

AMD Radeon HD 6870

running windows 8.1

The issue is that after a few hours my computer starts to drastically drop in performance. This is due to two reasons. Firstly explore.exe starts to use up my cpu. I can easily stop this by using process explorer to close the offending thread (only 1 thread i causing the issue, the rest are using minimal cpu) killing this thread reduces the cpu and appears to have no concequence in terms of functionality of my pc.

After this on average ten minutes later what happen is that svchost.exe starts using from 40%-60% of my cpu at which point if I do not quit any game I am playing my computer will crash. using process explorer to find the offending threads lead me to a thread with a TID of 1836. If I kill this process I lose internet connection. Yet before this happens there is no sign of this thread. It appears to not be present until the issue appears and when it does appear this process is essential to my internet connection.

Please can someone help me

Please provide us with your Event Viewer administrative logs by following these steps:


Click Start Menu
Type eventvwr into Search programs and files (do not hit enter)
Right click eventvwr.exe and click Run as administrator
Expand Custom Views
Click Administrative Events
Right click Administrative Events
Save all Events in Custom View As...
Save them in a folder where you will remember which folder and save as Errors.evtx
Go to where you saved Errors.evtx
Right click Errors.evtx -> send to -> compressed (zipped) folder
Upload the .zip file to skydrive or a file sharing service and put a link to it in your next post * If you have updated to win 8.1 and you get the error message "the system cannot find the file specified" it is a known problem.  The work around is to edit the registry.  If you are not comfortable doing this DONT.  If you are, backup the key before you do Press Win+"R" and input regedit
Navigate to:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\WINEVT\Channels. Delete "Microsoft-Windows-DxpTaskRingtone/Analytic"

I tried this and I got the original error you said I would get. I did the fix using the registry files and now I get the error - The specified channel could not be found. Check channel configuration

I tried again a few days later and the process worked. 

https://skydrive.live.com/redir?resid=2B0353F8F7925730!2812&authkey=!AJrPdmjUinV3JQM&ithint=file%2c.evtx

here is the file

Hi,

I suggest updating your Network adapter and video card driver first, since the driver conflict will cause the high CPU usage.

If the issue persists, try to capture the CPU usage trace log by using WPT during reproing the issue:

Windows Performance Toolkit (XPerf is what replaced KernRate for Windows Server 2008 and Windows Server 2008 R2) http://msdn.microsoft.com/en-us/performance/default.aspx

How to troubleshoot high cpu in the System process

http://blogs.technet.com/b/yongrhee/archive/2009/08/07/how-to-troubleshoot-high-cpu-in-the-system-process.aspx

Regards,

well that sounds very prossible. I did recently install new drivers to play BF4. Also I have a usb internet adapter since my pc does now have build in wi-fi which is starting to split. So that sounds possible

I uninstalled by drivers and unplugged my usb wi-fi adapter. The computer still crashed. Now after a few hours of trying to figure out how to run an xperf trace I am finally running one, I will get back to you in a day or so

Hi,

Any update on your issue?

Have you tried the xperf to get the log file for our research?