Hi guys!

I have just noticed a minimized window on the taskbar with no name but only a folder icon. If I click it, a black screen appears in the top left corner of the screen with no border. Right clicking does nothing. I have just installed Diskeeper and suspect it may be the culprit. Help please!

open up task manager and look under the process tab. end process on anything that looks suspicious but be careful that you don't end windows task's. I recommend not doing this unless you know a bit about how a computer functions and what windows components should be running

Thanks for the reply and yes I know enough about computers. There was a blank process usnderneath Diskeeper so ended both and it hasn't been back since. Probably a bug. It wasn't a virus.

glad i could help