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Stuck in boot after new CPU

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I swapped my E6420 with an E6600, but for some reason my PC suddenly stops halfway booting either XP Pro x64 or Win 7 (Dual Booting).
In Win 7 Safe Mode he stops at the file CLASSPNP.sys where in XP Pro x64 he stops at the file acpitabl.dat
Not a clue where to look now, and OF COURSE I got already rid of the E6420...

As far as I know, it SHOULD work.
I even flashed the BIOS successfully, but to no use.
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    Je suis Napoléon!

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and OF COURSE I got already rid of the E6420...

never throw away anything until you now your changes worked

have you tried a repair install on the windows installation yet? XP doesn't like it when you make MAJOR changes to the hardware profile (like a proc upgrade) without doing a repair right after the hardware replacement....if the repair doesn't work you will probably have to completely reinstall windows

Repair the Windows XP installation.

To do this, follow these steps:
  • Make sure that the CD-ROM or DVD-ROM drive is the first priority startup device.
    See your computer documentation for information about how to do this.
  • Insert the Windows XP CD into the CD-ROM or DVD-ROM drive, and then restart your computer.
  • When the instruction to "Press any key to boot from CD" appears, press a key. Your computer starts from the Windows XP CD.
  • When the computer starts from the CD, the system verifies your hardware, and then prompts you to select one of the following options:

    - To set up Windows XP now, press ENTER
    - To repair a Windows XP installation using Recovery Console, press R.
    - To quit Setup without installing Windows XP, press F3.

  • Press ENTER.
  • Press F8 to accept the Licensing Agreement.
  • A box lists your current Windows XP installation, and then the computer prompts you to select one of the following options:

    - To repair the selected Windows XP installation, press R.
    - To continue installing a fresh copy of Windows XP without repairing, press ESC.

  • Press R.

You'll get to keep your existing apps & settings, but you need to re-install SP2, Windows Updates & any unsigned drivers afterwards.
NOTE: Be aware that you'll lose any protection from Blaster / Sasser type worms. Don't go online without a firewall, whether the built in Windows one or 3rd party.

How to Perform A Re-Install Of XP.
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Oh heck, I hoped to solve it without a reinstall... :)

Ok, going for repair and reinstall, thank you...
A lot. :)

Problem: reinstalling fails, when it wants to 'start windows' the setup too, stops...

Edited by Xogrorth, 15 August 2009 - 03:16 AM.

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