My mouse was behaving erratically so I did a custom scan on all 4 drives, I after an hour ESET gave me a very long list of orange-coloured files that mainly said at the end "unable to open" is this caused by not having enough RAM or are these files damaged???
EXAMPLES:-
E:\ComunitecNetworkSetup\SOFTWARE\MicroStrategyDesktop_10.11_Windows\MicroStrategy Desktop 10.11\resources\unpacked\WindowsDesktop.exe » INSTALLSHIELD » data2.cab - decompression could not complete (possible reasons: insufficient free memory or disk space, or a problem with temp folders)
C:\Windows\System32\config\systemprofile\AppData\Local\DataSharing\Storage\DSTokenDB2.dat - unable to open [4]
HOPE someone can help