Hi,
Try a run with malware bytes free anti spyware and do a full scan and see what it finds & reboot.
Might have to do as follows to correct windows update
1 go to control pannel
2 admin tools /event viewer / select services
3 stop automatic update service
4 disable auto updates (right click my computer /proprties / and select auto update tab and disable)
5 go to c/windows folder
5 open sofware distribution
6 del contents of each folder 1 by 1.
7 goto control pannel
8 admin tools /event viewer/select services
9 re enable auto update services
10 re enable auto updates (right click my computer/properties / and select to auto.
may then work ok after that