Time Machine keeps trying to backup?

Time machine is turned off yet keeps trying to perform backups every hour. There is no hard drive for it to backup to. The alerts are driving me up a wall. i watch alot of movieS or online programming, netflix, etc, and then comes this popup alerting me it cant do what its not supposed to do with a drive that doesn't even exist.

ive googled and googled but not really found anything specific to my problem or that worked.

at one time i DID have time machine in use, with an external drive. i had even tried to change the time interval by editing the com.apple.backupd plist or whatever (which never worked anyway). but after the external drive micro controller board had a problem, the external has been nixed until future notice haha.

anyway after that, time machine was then turned off, and that was that.

well, after letting a windows user, get on my computer, she clicked on the time machine dock icon thinking it was safari or something that would let her browse the internet. ever since then, even after making sure it was off in system preferences, it has been giving me this problem and i cant seem to correct it.

HELP PLEASE!

 

tried deleteing plists. didn't work. there is no disk selected for backup.

any other ideas?
anyone?

 

had to do it...BUMP

 

i mean it made no difference after it had been deleted.