This sometimes happen when installing/uninstalling service packs.
Or just in case, you could try to run a scan with Malwarebytes (just google it)
The icons in control panel have their "target" in C:\Windows\System 32, with the extension *.cpl
If you had deals with service packs recent, then you should go to this folder, and do a search by extension.
Search>all files and folders.
On advanced options make sure this is checked:
Search hidden files and folders
On the All or part of filename type
U should see duplicates , like this:
mmsys.cpl and mmsys2.cpl
You should create first a restore point with System restore.
Then, you could try first moving the ones with "2" in a temporary folder, and restart.
If all is ok, you can eventually delete them.