Sounds like the Hard Drive is on its way out. Try running Disc checker on the C:\
Double Click My Computer then Right Click C:\ Properties\Tools\Disc Check put a tick in the box to fix errors and do a full test
Surface Pro (2017) vs Surface Pro 4
20 groundbreaking 3D animation techniques
How to mine Bitcoin on Mac
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.