Mid 2007 iMac won't recognize any keyboard or mouse

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iMac Intel 24インチ EMC 2134/2211

Model番号 A1225 / Mid 2007とEarly 2008 / 2.4, 2.8もしくは3.06 GHz Core 2 Duoプロセッサ

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alexbiery11 @alexbiery11

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投稿日: 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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投稿日: 2020年3月31日

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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?

alexbiery11 さんによる2020年3月31日

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

Dan さんによる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.

alexbiery11 さんによる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.

Dan さんによる2020年4月2日

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

alexbiery11 さんによる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インチ EMC 2134/2211

Mid 2007 iMac won't recognize any keyboard or mouse

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