iMac frozen on login screen

[Pamelarry]

Hi everyone! I've had my mac for over a year and haven't had any issues until now. Yesterday I was installing Trend Micro, and it was updating after the install, but then the whole thing froze, so after several hours of it doing nothing, I turned it off and back on again. Now it loads up to the login screen of 4 users + guest, but when you click on a name, nothing happens. All user accounts (except guest) are passworde protected but the password prompt doesn't even come up, and the sleep, restart, and shutdowns buttons don't work. I was able to safe boot once but had no clue what to do while in there, so I restarted and can't get back to safe boot. I restarted with Command + R (or is it D), the one that gives you the disk utility, and after verifying/repairing the disk and permissions, that same thing happens on reboot. I'm not sure what else to try as I don't know much about fixing macs.

Can anyone help? It is greatly appreciated. I should have done a back up or something but didn't...

Did I mention I'm a bit clueless?

Thanks!

 

[Kaveman]

Sounds like you may need to boot from your Disks and do an install in place

 

[Pamelarry]

It didn't come with any disks, but apparently there's an option to reinstall within the disk utility...but I'm not sure how exactly to do that...#1 is that I can't lose the files on the computer. Actually, I'm using safari from the disk utility right now

 

[Pamelarry]

Well...think I figured out how to use the reinstall, so I'm trying that...says it'll take over 3 hours so I guess I'll hope and pray that it works when it's done!

 

[Pamelarry]

ok...that didn't work either. nothing happens when I click the user accounts so I did a safe boot and was able to log in with no problem, but now I don't know what to do...all files are still there, I just can't log in unless in safe boot...

 

[Kaveman]

Trend Micro

has installe something that is crashing your Mac. Log in in safe mode find it and trash it.

 

[Pamelarry]

I did a series of steps in safe boot...installed updates, added a new user, changed the login screen so you have to enter a name and password instead of click a user, uninstalled trend micro, rebooted and now it works...

Thanks for the suggestions Kaveman!