Time Machine keeps trying to backup?

i've had this problem before and posted but i don't really remember how i resolved it. no one had the answer then, but i'm hoping someone might now as i've been at this about a week now.

i have a new imac 27 to replace my 24 that has a mysterious problem that me nor apple store can figure out. anyway i mounted the 24's drive via EHD enclosure and used migration assistant

since then, i keep getting messages from time machine (which i never turned on to begin with) that it could not back up no backup drive has been selected. it will NOT stop.

ive comtemplated using app zapper to get rid of it, but may want to use it in the future, so other than that, i'm open to try most any and all suggestion to fix this problem.

 

yea i have deleted EVERY plist i could find related to time machine. i never did reboots i just waited to see the message came or not.
i tried enabling then selecting none and letting it turn back off, but again without rebooting. im going to try it with a reboot and see what happens then ill report back.

as far as the imac24 goes, here's a link to my post about it.

the weirdest thing to me is, is that somehow even thought it won't boot to the GUI, its logged onto the network and can be seen by other macs and be logged onto and browse files. i can even play a movie off it...

http://forums.macrumors.com/showthread.php?t=1229051&highlight=

 

thanx. its been hours since i posted and it seems to have done the trick.

if you got any input on the 24, i'm all ears

 

thanks again, thanks a million. we somewhere around 24hrs and still no time machine issues. much appreciated and props to you!