Hard Disk Monitoring

I have 4 drives
When I reboot PC, 1 or more icons (typically 1) do not show up in System Tray.
I then go into configuration, Hard Disk Drives and double click on non visible drive to make visible and icon then appears.
How can I permanently have icons visible?
Thanks
Andy

Can you please use Report -> Send test report to developer option?

I suspect the issue may be related to the device driver of the disk controller which may initially provide partial disk status information.
If this happens and the temperature information seems not availabe, Hard Disk Sentinel does not display the icon.

From the report sent by Report -> Send test report to developer, I can check the actual driver version and verify what can cause the problem.