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I used Ubuntu 12.10 on my current laptop for a couple of weeks without problems... Now there is no way to start it.

When I try to boot Ubuntu during the startup process I get this error:

[CPU0]: Package power limit notification (total events = 1)
[CPU2]: Package power limit notification (total events = 1)
[CPU1]: Package power limit notification (total events = 1)
[CPU3]: Package power limit notification (total events = 1)

And it's like I can't do anything. I'm on a Sony Vaio laptop and the CPU model is: Intel Core i7-3520M CPU @ 2.90GHz

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What version of Ubuntu are you using? And what happens if you try to boot an older kernel (hold Shift when Grub is loading to select)? –  gertvdijk Dec 2 '12 at 18:50
    
Sorry, forgot to mention that.. The version is 12.10 and when I try an older kernel looks like sometimes I get the same error and sometimes it starts in low graphic mode. –  D4Ny Dec 2 '12 at 18:56
    
It seems more people are having the same error, on ubuntuforums.org, with no solution so far. Maybe for now it should be better to stick with an older kernel. –  ThiagoPonte Jan 23 '13 at 11:39
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2 Answers 2

May be Boot-repair will fix this problem. Follow the procedure Mentioned here "https://help.ubuntu.com/community/Boot-Repair" Or "Can't boot into ubuntu after remove window7" Hope this will help you.

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Get the Boot-Repair or if it fails TestDisk iso/image and boot from it.

Remark : you can also install the ISO on a live-USB (eg via UnetBootin or LiliUSB or Universal USB Installer).

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