|emptied "C:\Windows\temp" and everything went but Perflib_Perfdata_a04.dat|
Try booting to Save Mode, then clean out the temp directory.
Also you can can try Unlocker, it is freeware, you can get it here:
I have used it in the past to remove stubborn files.
You could also try a repair from the Add/Remove,
Scroll down to MS Office
When you click on it there should be Two buttons on the right,
One for Remove, One for Change,
Click the Change button
It should offer you a short menu, to Add Features, Repair or Remove,
try the repair option.
I have done reboot and tried to install Office again but same messages come up.
And those messages said....................