Computer won't boot correctly

I have a fairly new IMac. 2 months old to be exact. Never any trouble until today I started it just kept spinning. It would not go any farther just the apple sign and the round circle spinning. It started to get hot so I turned it off. Tried everything and ran all the tests which said there were no problems. Also I can't get the disk in there to eject as I was going to try and re-install application disk. I can't figure it out! Help!

HI and welcome to Apple Discussions...
Try restarting while holding down the mouse to eject the disc, or startup while holding down the Eject key.
If you can't eject a CD or DVD or open the drive tray
If you can't eject the disc, try booting in Safe Mode Once you are in Safe Mode, drag the disk icon to the Trash. Hopefully it will eject. Then go to the Apple Menu/Restart. Your iMac should startup normally.
Carolyn

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