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Member Since: ‎06-24-2009
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HDX16-1150ef - Windows 7 RC Build 7100 - CLASSPNP.sys - Startup Freeze



I have experienced some freeze at the startup of windows 7 rc build 7100 .


Even in safe mode,  it freezes when it loads classpnp.sys


I have seen that there is a lot of problem with that file on google.

Answers are :

- update the bios -> done

- enable/disable AHCI in the bios -> no option like that in my bios 

- disconnect any usb device, ... -> done

- image-cd was not burn correctly -> done


And it still freezes.


Some guys reported that they have experienced the same problem on a desktop computer.

They change the setting on the hard drive of their desktop from cable select to master but I 'd rather not to open my laptop.


I have the 64bit version.


I have an acronis image on a external drive.

When it freezes, I take that image back on my computer and it magically works again.

After some days, without any installation, it freezes again and I have to reload the backup.

It's a bit boring. 


Another point is that I have a new message in the notification taskbar : something couldn't connect to windows notification service.

Maybe it is bound maybe not. I think it's something else but can't be sure.


If someone has a clue, please help me.


Thanks a lot,

Hasan Ozdil, Brussels 

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