A defrag of the hard drive may cure this.
Often it is caused by buggy windows updates failing to install properly.
If defrag does not help try and roll back using system restore to a time when the problem did not exist.
What is ransomware and how do I protect my PC from WannaCry?
What I learned from my mentor, Oscar-winning VFX supervisor Phil Tippett
Siri vs Google Assistant
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.