Hi,
Do you mean those desktop icons are always changing? In my point o view, it seems like there are third party applications leading that issue, will you please try to find out what applications did you use that may lead this issue?
You can open MSCONFIG.exe, and under Services tab, check Hide all Microsoft services to list all third party services running. You may clean boot your computer and check whether the issue can be solved, if solved, then check out what application lead to that.
In addition, please also try to use another local account to logon and check out the result.
Regards,