Eggiej Posted January 22, 2008 Share Posted January 22, 2008 Hello, After installing MacOSX Leopard 10.5.1 MacOS is working fine, it bootes and i can enter the os without any problems. When i reboot my notebook and try to startup MacOS again i get the following error: "You need to restart your computer. Hold down the Power button for serveral seconds or press the Restart button." I tried to reinstall it a few times but after the first reboot I get the same error everytime. I hope someone can help me with this. Iatkos v1.0i r2 Intel Core2Duo T7500 4096 MB DDR2 =====Update===== I've searched on the forum and googled and I found the following to resolve the problem: /library/SpeedStep sudo mv ACPICPUThrottle.kext ACPICPUThrottle.kext.pos After renaming this file the os booted with no further problems, are there any disadvantages at this solution? Link to comment Share on other sites More sharing options...
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