- Edited by Dolarin Thursday, July 23, 2015 4:07 AM
Regarding to your posts, I understand that you main issue is that CPU usages reached 100% when you are checking updates after you installed SP1.
For checking updates, the related services is Windows update service. If the service is corrupted, we may encounter such issue as never stopping checking updates and high CPU usage.
Please run following commands to scan and repair system, make sure to run as administrator:
dism /online /cleanup-image /restorehealth
If we cannot fix this issue by above commands, please try to use Process explorer to view which other certain process which called svchost use much CPU.
Once you download it, just run the exe file as it does not have to be installed. Hover your mouse over the svchost process and youll get a popup showing you which services are running under that process. If you noticed any 3<sup>rd</sup> part process or driver related process, please disable or remove and reinstall to fix this issue.
In addition, if the issue still persists, please try to reinstall SP1 via standalone installer in clean boot mode to check if the issue still persists.
This may be related?
If you use WSUS or ConfigMgr, also read this: