Do I need a Video Card replacement?
I replaced the power supply a year ago. All has been generally well since then. For the past 2 years, if my wife turned up the brightness above anything but the minimum setting for the display, the machine would freeze. If we kept the brightness as low as it will go, the machine would do fine. Until we went on summer vacation in late July this summer and came back to the machine frozen on the desktop background picture of our family without anything showing up on the desk top. I rebooted. Same thing. I let it cool down for a few hours unplugged. It booted up and then got locked on the desktop but this time with all of the icons present on the desktop. That means that if it were strictly a fan or heat issue, that it took less than 2 minutes to overheat and lock up. I took my wife's hair dryer on the cool setting to blow cool air through the fan inlet. I was able to reboot and use the internet for 5 minutes successfully, but then it locked up again. Do I need to replace the video card? Is that even an option?
Many thanks!
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what are the last four digits of your computers serial number? that will allow us to properly identify your iMac.
由 oldturkey03 完成的