In order of recommendations:
Restart your device
Uninstall and reinstall the standalone client
Run anti-virus scan, remove any detections
Dismantle your device and give it a clean, especially the RAM slots. (A strand of hair there can prevent a computer from booting; I've seen that happen). Put device back together afterwards and try to use standalone.
Disk may be fragmented, search defrag and click Optimise. Should improve speed, but not necessary getting applications to work correctly.
Disk might have bad sectors - see https://www.disk-partition.com/windows-10/bad-sector-repair-windows-10.html
chkdsk c: /f /r (fix errors and recover data as possible)
If none of the above work, install and reinstall Windows.