Error in window 10.

[Milind Goel]

I have a dell Inspiron 5558 with Windows 10. From many days, the laptop is getting slower and slower day by day. Now when i checked on event viewer, i saw critical and error events based on kernel tracing. Also, i have performed the dism command to check the health and it says that "the component store is repairable. When i put command to restore health, it should take Windows Update as a default source, but it is not taking. So i want your help to this problem and wanted to know if this problem related to kernel or is the component store???