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Windows 7: BSOD while classpnp.sys classpnp.old (Safe Mode)

28 Apr 2013   #1
Acro

Windows 7 Home
 
 
BSOD while classpnp.sys classpnp.old (Safe Mode)

Hello,
I have recently taken the hard drive of my laptop and connected it to my desktop computer. The name of the hard drive is ; WD2500B EVS - 60 USTO (250GB). However when I try to boot from using windows 7 than I get a BSOD but when I boot it using ubuntu it works. The Hard Drive is dual (windows 7 & ubuntu). I pretty much used every resource to fix this problem; safe mode, safe mode with networking, windows 7 repair and still I get the same result. When I tried to boot from safe mode it always gets stuck in C: \windows\ system32\drivers\classpnp.sys classpnp.old. Any ideas on how to resolve this issue ?


My System SpecsSystem Spec
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29 Apr 2013   #2
x BlueRobot

 

Did you follow these steps when creating a Dual Boot with Linux and Windows? Dual Boot - Windows 7 and Linux
My System SpecsSystem Spec
29 Apr 2013   #3
Acro

Windows 7 Home
 
 

Yes because it works on my laptop but when I connect it to my desktop computer it doesn't. (windows 7)
My System SpecsSystem Spec
.

29 Apr 2013   #4
x BlueRobot

 

Try these steps since your computer is unbootable - Troubleshooting Windows 7 Failure to Boot
My System SpecsSystem Spec
29 Apr 2013   #5
Acro

Windows 7 Home
 
 

Ok I'll give it a try.
My System SpecsSystem Spec
29 Apr 2013   #6
x BlueRobot

 

Thanks, please post the results of each step which has been completed.
My System SpecsSystem Spec
29 Apr 2013   #7
Acro

Windows 7 Home
 
 

I'm gonna do each step and give the results one by one;

Step 1 - I already tried this step before I wrote this post.
Step 2 - Can't boot from Safe Mode or with Networking.
Step 3- Tried using bootable Kaspersky USB Rescue Disk however when booting from the usb I get a message "No operating systems found".. Also I can't move the HD to another PC since I dont have one (laptop is broken). I'm still gonna try the other ones though.
My System SpecsSystem Spec
30 Apr 2013   #8
x BlueRobot

 

It seems that the BIOS couldn't find a bootable sector for your Windows 7 installation, it seems that the GRUB bootloader, may have overwritten the Windows bootloader, leaving your Windows 7 installation in a unbootable state.
My System SpecsSystem Spec
30 Apr 2013   #9
Golden
Microsoft MVP

Windows 7 Ult. x64
 
 

I'm confused by the problem : the dual boot was working fine in the laptop, but you have moved it to the desktop? Why?

I agree that it looks like GRUB has destroyed the Windows MBR - why it would do that simply by moving the drive from the laptop (where there was no problem) to the desktop, is still unclear to me. I'm not sure we have the complete story.

See if this helps to get Windows booted:
MBR - Restore Windows 7 Master Boot Record
My System SpecsSystem Spec
30 Apr 2013   #10
Arc

Microsoft Community Contributor Award Recipient

Microsoft Windows 10 Pro Insider Preview 64-bit
 
 

What about updating GRUB? Will not it correct the boot error for both the OSs?

I am not very linux savvy, but if the HDD is formatted as GPT by linux, might it be the reason for not booting windows? Probably a GPT/EFI issue?
My System SpecsSystem Spec
Reply

 BSOD while classpnp.sys classpnp.old (Safe Mode)




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