I would suspect the cooling fan needs cleaning or the hard drive is failing.
Boot Camp is an assistant that will guide you through the installation of the Windows operating system. Once installed you can boot into Windows and play Crysis on the iMac.
Holding down the Option key (alt) while the Mac is starting up will offer you the choice of how you want to boot the Mac. Selecting Mac OS X will make that the default boot.
Boot Camp allows you to install Windows on your Mac and dual boot. Your Mac will look just like a Windows PC when you boot into the Windows partition. You will also have to install Windows Security on that partition to be safe.
Yes, in dual boot mode you can run Windows 7 on a Mac.
Insert the DVD and then shut you Mac down. Push the power button while holding down the C key. If for some reason it does not boot from the DVD then hold down the Option key while starting the computer. That will bring up the Startup Manager where you can choose to boot from the DVD.
Here is a couple common fix solutions you can do with your running slow iMac computer.Restart your iMac frequently. Applications that "leak" memory can make the computer feel slow and sluggish, a system reboot may help resolve the issue.Remove unnecessary programs at startup. Clearing the number of auto start-up programs will help reduce boot up time to some extent.Get rid of those useless junk files & items. All these files might possibly responsible to the slowing down of your iMac, freezing and crashing.Clean up the Dashboard. Make sure you have no unnecessary widgets running.Empty Mac Trash. Be sure to delete unneeded files and also remember to empty your iMac trash, in case you will still have the free space problem and slow iMac performance.
Use Bootcamp, which comes preinstalled on the iMac, to install Windows on your iMac. You can the dual boot to Windows and play any Windows game you want. Know that you will have to install security software on the Windows partition if you go online of do email on that partition.
Windows Movie Maker can only be installed on an iMac if you install Windows on a Mac. You can do that with Boot Camp or Parallels. However, your iMac already has excellent movie making software that came pre-installed that is just as good as Movie Maker. It is called iMovie. Open it and give it a try.
I have a screeching sound in my pick up when it gets up to 2000 rpms. Does not make the noise while idling and starts fine.
One can see old iMac Commercials in Youtube which features the different types of commercial about old iMac such as All Mac vs. TV adds, Apple iMac vs. HP, and iMac G3 starting up.
You can plug up your 2012 iMac when you are finished using it. Nothing will happen to the iMac. After the iMac is fully charged, make sure to unplug it.
Steve Jobs