The VideoLAN Forums

When I try to open VLC (either manually, or opening a video file), the program does not appear. If i try launching again, i get the dialouge box informing me there was a crash last time it was opened. But dismissing the message does not open VLC.
Task Manager does not show VLC running at all. Uninstalling and Reinstalling has not seemed to help.
I reset my windows install, and that seemed to get VLC to work, but after one day it is back to no longer working/launching.

What is your OS ?

First, reboot your computer.
Uninstall VLC.
Then delete the whole C:\Program Files\VideoLAN\VLC\ folder if it's still exists, it might be C:\Program Files (x86)\VideoLAN\VLC\ if you're using the 32-bit version. Check both folders anyway.
Also delete the whole %APPDATA%\vlc\ folder.

Once done, reboot again and reinstall latest version of VLC, v3.0.21 as of today.