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Windows 7: Safe mode startup shows a CLASSPNP.SYS error and haults

25 Sep 2019   #1
loninappleton

Windows 7 x64 Ultimate
 
 
Safe mode startup shows a CLASSPNP.SYS error and haults

I hasve troublesome HD since it got shut down during a power out. So I'm trying to manually recover things from it since it won't boot.

When installed as D: my primary C: HD gave this aerror when running in Safe mode.

Windows\system32\drivers\CLASSPNP.sys

Since there's no boot for the D: I cannot run SFC system scan scannow on it.

What causes the hault at this line of startup?

I unplugged the D: after shut down and my C: boots normally.


An update. I found another way in to this "D" drive attached to another PC. Currently I have set to run the disk repair routine on it which seems to be running ok. Disk repair is found in properties options.


My System SpecsSystem Spec
.
25 Sep 2019   #2
Paul Black

Win 7 HP SP1 64-bit Vista HB SP2 32-bit Linux Mint 18.3
 
 

Hi loninappleton,

Quote   Quote: Originally Posted by loninappleton View Post
I have troublesome HD since it got shut down during a power out. So I'm trying to manually recover things from it since it won't boot.

I cannot run SFC system scan scannow on it.
[1] Have you got an installation DVD/USB?
[2] You can recover your data etc using a Linux Live CD.

I hope this helps!
My System SpecsSystem Spec
25 Sep 2019   #3
loninappleton

Windows 7 x64 Ultimate
 
 

Yes this Win7 is an old rig and I have the installer and a thumb drive plus DVD Win7 Repair
which I've used plenty on this (attempted to refresh fixboot and bootrec but it would hang as a boot drive.) As stated this all began with a power out during a disk to disk clone operation.



Please say more about the Linux Live CD. I have not used one of those in many years-- just never
adapted to the Linux language and all the permissions and such.


Right now I'm running a scan and repair routine (long) on it to see if that does any good
as noted in a related question.
My System SpecsSystem Spec
.

25 Sep 2019   #4
Paul Black

Win 7 HP SP1 64-bit Vista HB SP2 32-bit Linux Mint 18.3
 
 

Hi loninappleton,

Quote   Quote: Originally Posted by loninappleton View Post
[1] Please say more about the Linux Live CD. I have not used one of those in many years-- just neveradapted to the Linux language and all the permissions and such.

[2] Right now I'm running a scan and repair routine (long) on it to see if that does any good
as noted in a related question.
[1]

Win 7 System Recovery Options - Linux LIVE DVD Or USB

You can create a Linux Live DVD or USB [this means that the Linux OS runs directly from the DVD or USB and not the HDD because it doesn't need installation]. This will read the HDD information which is inaccessible through Windows directly from the controller and is often a better solution in these types of situations. Another advantage of this is that you will have less activity on your HDD while you are trying to access it to retrieve [look at] the files.

Download the Linux ISO [I have used Linux Mint for this example] from here => Linux Mint.

Now burn the ISO [you can't just copy and paste it because it won't work] to a DVD or USB and boot it.

Nothing will be installed to your HDD unless you specifically tell it to. You can now retrieve [look at] the contents of the HDD from within Linux. When you have finished and want to go back into Windows, just remove the DVD or USB, then Shutdown and Restart the computer.

[2] Using your installation DVD/USB. you could try [if possible] a Repair Install!

Repair Install - Overview

A repair install differs from a clean install in the fact that it ONLY replaces the corrupted OS with a new fresh copy. This means that ALL your User Accounts, Folders, Files, Documents, Pictures, Music, Videos, Data Files, Icons, and any installed programs are left intact. It does however, delete ALL the Window updates, and could possibly affect, sounds, services, visual effect settings and device drivers by re-setting them to default [unusual though]. You cannot do a repair install at boot, in Safe Mode, using a system repair disk, or using an integrated Windows update disk. Basically, this process can ONLY be performed from within the LIVE OS.

I hope this helps!
My System SpecsSystem Spec
25 Sep 2019   #5
loninappleton

Windows 7 x64 Ultimate
 
 

OK I'll review this in detail. But since it is Linux I will need a step by step on the procedures.


I've also had good success with Everything.exe from Voidtools. But nothing is real consistent with this.
My System SpecsSystem Spec
25 Sep 2019   #6
loninappleton

Windows 7 x64 Ultimate
 
 

I see where you mentioned Repair Install. That hasn't worked for me since XP but I'll see your instructions on it.
My System SpecsSystem Spec
25 Sep 2019   #7
Paul Black

Win 7 HP SP1 64-bit Vista HB SP2 32-bit Linux Mint 18.3
 
 

Hi loninappleton,

Quote   Quote: Originally Posted by loninappleton View Post
OK I'll review this in detail. But since it is Linux I will need a step by step on the procedures.
It is really quite simple.

Download the Linux Live CD ISO, burn it to a DVD/USB, boot it, browse to the HDD, copy your files etc to an external HDD.

I hope this helps!
My System SpecsSystem Spec
.
25 Sep 2019   #8
Paul Black

Win 7 HP SP1 64-bit Vista HB SP2 32-bit Linux Mint 18.3
 
 

Hi loninappleton,

Quote   Quote: Originally Posted by loninappleton View Post
I see where you mentioned Repair Install. That hasn't worked for me since XP but I'll see your instructions on it.
Repair Install - With Installation DVD/USB

Insert the DVD/USB and boot the computer. When AutoPlay appears, click Run setup.exe.
The process is the same as if you were doing a clean install, with the exception of when you get to the Which type of installation do you want screen, you MUST click Upgrade.

I hope this helps!
My System SpecsSystem Spec
25 Sep 2019   #9
loninappleton

Windows 7 x64 Ultimate
 
 

Ok. I'll see how the Live disk runs.
My System SpecsSystem Spec
26 Sep 2019   #10
loninappleton

Windows 7 x64 Ultimate
 
 

Once I have my things backed up I can try the repair install. From above, the Repair install only runs
from the Win7 DVD you say. That's the full Windows installer. I have the Win7 mounted to a USB as well.
I'll try it if there's a step by step someplace but I freeze when doing this thinking it'll wipe my data.
Simply put I'll be doing this on a scarifice disk after securing all folders on it elsewhere.
My System SpecsSystem Spec
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 Safe mode startup shows a CLASSPNP.SYS error and haults




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