Windows Best Kept Secrets

Windows Best Kept Secrets is a screamer video that was first uploaded to YouTube back in 2007 by a user jhonmcclure.

This video begins with a headline revealing Windows XP's secrets. The video then cuts to low-quality footage of the creator trying to figure out the mysteries on his own computer, At 33 seconds, a negative picture man appears along with a constantly looped scream And it isn't over there either. After the video mocks you for falling for it, another screamer will reappear.

Link
NOTE : The following video contains a screamer!
 * youtube.com/watch?v=vP4HQQlYF9M