I'd rather not use a 3rd party software for that since it should've been possible to do with Windows itself. I'd prefer to fix the issue.

I created a new folder on the desktop and I can't change its icon to a one I downloaded. selecting the icon from the stock list (shell32.dll) works fine though. I tried with another folder in...

shell32.dll,-50 shell32.dll,-51 shell32.dll,-52 aren't transparent for me. they're images or printers or such. I guess I'll just use a custom blank .ico.

edit: I'm stupid, I was using imageres.dll...

pressing Win+X doesn't show the power user menu for me anymore. right clicking Start button doesn't work either, but when I do it, the mouse cursor jumps several pixels up and to the right. I did...

just press Windows key and start typing.