Mid 2007 iMac won't recognize any keyboard or mouse

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iMac Intel 24" EMC 2134 and 2211

Model A1225 / Mid 2007 and Early 2008 / 2.4, 2.8, or 3.06 GHz Core 2 Duo processor

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alexbiery11 @alexbiery11

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发帖于: 2020年3月31日

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Mid 2007 iMac won't recognize any keyboard or mouse

Hello,

I have a mid-2007 iMac that I upgraded to a core 2 duo T9500, aswell as switching the original hard drive for a 2.5 in 1 tb hard drive. I original received it running El Capitan, which I then upgraded to catalina, after some time I moved to Linux mint, and I have now after much work reinstalled MacOs and I am currently running MacOs High Sierra. The issue I am having is that none of the keyboards or mice that I plug into any of the ports are being detected, and it is effectively dead in the water, as I can’t log in. The only time I can get them to work is if I am in the boot picker, any other time they simply aren’t detected.

Has anyone else had this issue, or heard about it?

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Dan @danj

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Are you able to create an external bootable FireWire drive from anther Mac system with Lion OS-X 10.7.5 which is the highest level of OS-X you can run on this system.

From what is sounds like you pushed the system beyond what it was designed to run. Pushing it to Catalina I think did you in. You’ll need to return your systems EFI if you can’t get the external boot drive to boot up.

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I don't have another system with Lion, as this system was given to me by a relative, but if I got an install disk with Lion, would that work?

由 alexbiery11 完成的 2020年3月31日

Sure give that a try! Are you able to boot up under it?

由 Dan 完成的 2020年3月31日

Yes, I can get to the booot picker, it just freezes up once I'm on the lock screen.

由 alexbiery11 完成的 2020年4月2日

Not good ;-{

Thats a sign the PCH chip has failed, the systems EFI maybe the cause.

This chip interfaces between your drives PATA (optical) or SATA (HDD) and the CPU.

由 Dan 完成的 2020年4月2日

I'm guessing theres no way to fix that at home.

由 alexbiery11 完成的 2020年4月3日

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I don't have another system with Lion, as this system was given to me by a relative, but if I got an install disk with Lion, would that work? — alexbiery11
Yes, I can get to the booot picker, it just freezes up once I'm on the lock screen. — alexbiery11
Not good ;-{

Thats a sign the PCH chip has failed, the systems EFI maybe the cause.

This chip interfaces between your drives PATA (optical) or SATA (HDD) and the CPU. — Dan

iMac Intel 24" EMC 2134 and 2211

Mid 2007 iMac won't recognize any keyboard or mouse

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