So does any of the services start ?
I dont think you can uninstall callmanager once you install it (Control panel add remove programs, grays out the uninstall button).
I may advise that you take an image of atleast the OS (with all Os patches installed), so atleast you can save that much time and work.
A dirty way to do this (which may not be clean) is to
uninstall sql,
delete, callmanager install folders from the system,
remove all registry entries manually.
Probably that much time can be spent reinstalling another one. (2-3 hours)
Sankar.
PS: please remember to rate posts!
Sankar Nair
UC Solutions Architect
Pacific Northwest | CDW
CCIE Collaboration #17135 Emeritus