Hi,
In regarding of the issue, I have some questions.
- Which operation system did you use?
- Did the issue occur only in Excel or some other programs?
- Did the issue occur during the copy/paste
behavior or some other operation?
To narrow down the issue, please first test this issue in Office safe mode:
Starting the application in Safe Mode is a great way to find out if the problem is caused by and add-in. To do this, go to your Start screen in Windows 8 or click
Start > Run in Windows 7, and type one of the following commands:Type
excel /safe and press Enter to start Excel 2013.
If the Excel works well, lets disable the add-ins one at a time.
Secondly, s going on:
Process Explorer v15.40
http://technet.microsoft.com/en-us/sysinternals/bb896653.aspx
Detail steps you can refer this blog:
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
It could help you to determine which process detailed under svhost.exe cause the issue.
My suggestions are:
-
For the third part applications causing this issue, please remove it to check the results. Or we can install the updates for this app.
-
If this issue happened relating to drivers, lets try to update it to compatible with Windows 8.1.
- Upgarde the Office patches.
- Repair Office.
Let me know the result after you tried the methods.
Regards,
George Zhao
TechNet Community Support