Hi Paul,
EDIT: Disregard the bottom text. After googling a bit I found a stackoverflow page where the guy told me to do the same thing as you asked, checking regedit. turns out i have a current_user entry after all. I have very bad eyes so that's why I missed it. the autorun entry was there and I removed it.
It pointed towards a firewall module that was a part of a virus that was removed automatically when I installed something a few days ago. So it pointed to nothing, that's why it couldn't execute its task. In the end it could've only been a registry entry when I think back.
Thanks for baring with me and of course I really appreciate the help!
Kind regards,
Rajiv
END EDIT
I have a 64bit system, I already tried opening cmd in the system32 folder but it doesn't do anything. In both system32 and SysWow64 folders the cmd opens and closes real fast. When i run cmd like this though it doesn't open explorer and when I open both cmd's in powershell it doesn't give me the "file or directory find: explorer.exe no such file or directory found" message. usually when i open cmd in powershell with the cmd command it displays this message and opens explorer. when I open cmd with powershell in de specified directories by you it doesn't show any message and no explorer window is opened.
I am really confused, I'm tempted to just reinstall windows to be safe, even though I'm almost 100% sure nothing is compromised. Just to be on the safe side, but it is such a pain to reinstall everything.
Kind regards,
Rajiv