My Windows 7 install has a strange problem where sometimes the scroll wheel icon for the mouse gets stuck on the screen.
It's hard to explain in words, so here's a picture (it's in the blank space on the right side, halfway down the screen).
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Unchecking "allow themes to change mouse pointer" did not work for me. What did work on the other hand was the following solution (for Synaptics touch pads):
run regedit, navigate to HKLM\SOFTWARE\Synaptics\SynTPEnh in left pane, right click SynTPEnh, select New/DWORD Value. Name of the new key should be writable, Name it: UseScrollCursor , value should be zeros at default, no need to change (in my case). (Credit: Mr JGR)
Then I rebooted my computer and the icon was gone.
This happens for me when, in the same time, I scroll with the Touchpad and move my mouse around (but only on specific softwares).
None of the permanent fixes above worked for me (Windows 10) (adding
UseScrollCursor in regedit + changing shceme) but I can at least remove the stuck icons, each time it happens, by restarting the process
SynTPEnh.exe in Process Hacker
It's not a permanent fix, but it works.
If you don't have Process Hacker and you don't want to install it:
Synaptics TouchPad, right-click and select open file location
Synaptics TouchPadand select
This is Windows 10 manual:
Is it working?