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Windows 7 hangs at classpnp.sys for 10 minutes


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#1 fetchcomms

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Posted 01 September 2009 - 10:10 AM

I've been using my Windows 7 Ultimate RTM for 3 days, when suddenly when I turn it on, it stays on the "Starting Windows" boot screen for a long time. I tried safe moed, and it seemed to be just after the classpnp.sys was loaded. For about 10-15 mins, all there is is my computer cliking inside, then it starts going again. After I log in, it works fine, but it just takes forever to load.

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#2 Jacee

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Posted 01 September 2009 - 04:03 PM

Read this article:
http://support.microsoft.com/kb/326122

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#3 fetchcomms

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Posted 02 September 2009 - 01:31 PM

That article only applies to Windows 2000 and I could not find the hotfix, anyway.

#4 duvidl

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Posted 21 September 2009 - 12:37 PM

I had this same problem and solved it by changing 2 BIOS settings. This is an eMachines T2245, don't know what the motherboard is, you can look it up if you want to:

1. Disable CPI APIC support
2. Under PCI/PnP settings, set Plug and Play O/S = YES.

I don't know if both are necessary, just know that after making these changes the PC boots in Win 7. I believe it is build 7600.

Good luck, hope this helps some of you.




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