The information in this article applies to:
ZoomText 10.1.x.xxx
Dell systems With True Color software installed.
Windows 8.1
PROBLEM
After installing ZoomText you log in and the desktop starts to Load, the screen will turn black and flicker then takes you back to the Log in screen.
SOLUTION:
Boot to safe mode
http://www.7tutorials.com/5-ways-boot-safe-mode-windows-8-windows-81
Go to Windows Control Panel > Programs And Features > uninstall True Colors.