i bought used iMac. the person i bought from has their Apple ID information still on this iMac. i noticed this when i was trying to get drivers for an HP printer. Apple Store Updates has them but i have no access thru prior owners Apple ID. attempted to contact the person i bought from and he is long gone. he will not answer email. i tried to delete his Apple ID but not successful. my Apple ID is in the computer but the Apple Software Update will not allow me to do anything. Keeps going to his Apple ID. (quite annoying) There are updates to Pages,Numbers,iMovie and Keynotes in there so i thought that was my problem. I put them in the trash to see if that would allow Apple Software Updates. No success. (i try to avoid the apple store.... i do not like the idea. I would like to have the choice of going to a store to download whatever it is I want instead of REQUIRING I go thru the APPLE Store exclusively) Would you know what i can do to erase the prior owners Apple ID off this computer? I really need to get the HP drivers. I went to HP.com they directed me back to Apple Store.Then of course Apple Store has NO support . This kind of stuff makes me think how much of a mistake it is to purchase MAC... should have gone with Windows...less hassle!! Also, I did go to Apple Store and signed out from the prior owner then signed in with my Apple ID. no success. i closed everything and restarted my computer. The ASU still under his ID!