New
#11
Short of reinstalling you could Clean Up Factory Bloatware to regain as much performance as one can get with a corrupt factory preinstall.
Then run SFC /SCANNOW Command three times to see if it can repair damaged System files.
If not the last resort before Clean Reinstall is a Repair Install.
Ironically it would be faster to do the Reinstall and if you follow the steps closely you'll have a perfect install, better than 99% of other users.