At first glance the strip appears to be a problem with the video chip. Take the machine to your nearest Apple Store for service.
Fix it.
That all depends on what is wrong with the video.
Left click > hold > and drag.
You need to remove the ink cartridge and shake it, then replace it and the black stripe should go away.
To fix your iMac if you can't use the bootcamp partition, reboot it and check the install logs.
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.
This could be a wide variety of problems, but the most common nowadays is malware. Go to www.download.com and install, update, and run Ad-Aware 2007, and SpyBot. These should do a clean sweep of your system.
Return it or buy a new one or exchange it
I think he started by repairing computers and selling them from the back of his car. He actually bought an Imac broke it and then tried to fix it into a PC of his own.
I have an iMac running snow leopard and a MacBook pro running lion. On both computers, I have the latest version of the game with no expansion packs. It works fine on my MacBook but always gives me the "disc authentication error" on my iMac. I don't know for sure if this will work for you, but you might try upgrading to Lion if you haven't already.
I am not sure if ut will be the same, but in my 1995 subaru impreza the horn relay was located under the dash, behind the fuse box. You have to look for a small connector with three wires going into it. The wires should be red, blue with a black stripe, and red with a green stripe. It is hard to get to, but why would they want to make it easy to fix your own car?! Hope that this helps someone, it took me a entire day to find it!
Look for a tan wire with a black stripe near the distributor. Follow this wire looking for a break or a spot where it insulation is gone and is shorting on a bracket or other metal part. Mine was shorting out on the rear lift bracket bolted to the intake. G.