The very first step in diagnosing a video card issue in your 2009-2011 iMac is understanding what the video card actually does. The video card is responsible for computing and displaying graphical information that the computer writes to a monitor, projector, or other displays.
Within this guide there will be a few steps to diagnosing your video card issues at home or in the office.
- Usually the first sign of video card issues would be some sort of video glitches, in the form of lines or pixilation on the screen or the screen shutting off entirely.
- Another sign of video card issue is the computer not booting to the Operating System (OS) entirely or crashing upon booting. A sign of this could also be slow boot ups or a progress bar that seemingly never moves.
- The very last symptom is not one that can be seen but more felt. To elaborate when the graphics chip is malfunctioning, it has to work harder therefore it produces more power consumption in turn making the iMac become much hotter than usual. This can be felt on the back assembly near the top right, if it is hot to the point that if makes your hand uncomfortable to leave there that is a sign that things are not working as that should.
Once you have diagnosed these issues the next step is to repair the iMac which includes replacing the video card itself this piece is modular and can be removed although this involves taking most of the computer apart including the LCD screen. This process is best left up to professionals as the power supply within these iMacs hold a charge and can be dangerous if not handled properly. Luckily the technicians (including myself) here at Experimac of Naperville are more than equipped to handle this process and, whether you decide to fix the issue or trade your iMac in for a new one we can help with every aspect of the order. Written by: Greg Powers