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Windows 7: Classpnp.sys for crying out loud :(

10 Oct 2012   #1

Windows 7 Home Premium 64bit
Classpnp.sys for crying out loud :(

I'm desperate my computer won't start! doesn't response to repair system, restore system, restore image or anything else. safe mode stuck at Windows/system32/drivers/CLASSPNP.SYS
does any1 know what it might be?
BTW: any BIOS trick didnt help
the first crush accured while playing a game (not so heavy on graphics..)


My System SpecsSystem Spec
10 Oct 2012   #2

Windows 10 Pro X64

Run System File Checker (SFC) and chkdsk from the Recovery Console (chkdsk first)
  • Boot your Vista or Windows 7 installation DVD
  • When you see "Press any key to boot from CD or DVD", press Enter
  • At the "Install Windows" screen, click on Repair your computer at lower left
  • At the System Recovery Options screen, make note of the drive letter assigned to your boot drive (normally C and click Next
  • At the Chose a Recovery Tool window, click on Command Prompt. You will be sitting at X:\Sources directory
  • Run SFC or chkdsk
    • If you did not note the drive letter of your boot disk, you can enter bcdedit and look at the osdevice line to see what it is.
    • For sfc, type sfc /scannow /offbootdir=c:\ /offwindir=c:\windows and press Enter (use the letter from above)
    • For chkdsk, type chkdsk c: /r and press Enter (use the letter from above).
Let either run to completion undisturbed.

Vista or Windows 7: If you don't have a install DVD, you can download a legal copy here:
Official Windows 7 SP1 ISO from Digital River
Download Official Windows Vista RTM with SP1 Setup Files (32-bit and 64-bit)

Make sure you get the same version you have installed: 32 or 64 bit; Home Premium, Pro or Ultimate.
My System SpecsSystem Spec
11 Oct 2012   #3

Windows 7 Home Premium 64bit

I'v already tried that. since my windows "disk" is on my HD i got into x:/windows/system32
but i cant get into partiotion C. it seems like it lock or something like that :S
i can't run sfc /scannow it says there is a scan pending or s*!t.
i can't run chkdsk c:/ it syas its a not write premited partition or something
i can run bootrec.exe but can't run its utilities cause appearently there is no OS installed!
HOWEVER, when i get into image recovery and i press browse i can see my D partition, (not the OS partition offcourse) and all the files in it. i can also see how many GB Free left and used. Also i can see X partition i think its the replacement of the setup disk. i can see there is a C partition but i can't get into it nor see how many GB left as free sapce, like i said before its seems to be LOCKED or something or disconnected.
PLZ help me!
My System SpecsSystem Spec

11 Oct 2012   #4

Windows 10 Pro X64

What do you mean by since my windows "disk" is on my H?

You need to boot a install DVD as I mentioned and also as I mentioned, if you don't have one you can download it.
My System SpecsSystem Spec
13 Oct 2012   #5

Windows 7 Home Premium 64bit

i can't do what u said cause it says the drive is write protected.
it doesnt even show me what drive my OS on

When i write in the X:\sources>bcdedit
it thinks for 5 min and then:
the boot configration data store could not be opened.
the system cannot find the file specified.
My System SpecsSystem Spec
13 Oct 2012   #6

Windows 10 Pro X64

Boot the Windows install DVD and go to the Command Prompt as I described above.

From the Command Prompt, enter diskpart then list volume. That will show you what drives/partitions are available and what the drive letter is. This is what mine looks like:

Microsoft DiskPart version 6.1.7601
Copyright (C) 1999-2008 Microsoft Corporation.
On computer: DELL-P370

DISKPART> list volume

Volume ### Ltr Label Fs Type Size Status Info
---------- --- ----------- ----- ---------- ------- --------- --------
Volume 0 O DVD-ROM 0 B No Media
Volume 1 D D370_D NTFS Partition 78 GB Healthy
Volume 2 E D370_E NTFS Partition 191 GB Healthy
Volume 3 F D370_F NTFS Partition 9 GB Healthy
Volume 4 System Rese NTFS Partition 157 MB Healthy System
Volume 5 C D370_C NTFS Partition 119 GB Healthy Boot
Volume 6 G D370_G NTFS Partition 698 GB Healthy
Volume 7 H D370_H NTFS Partition 542 GB Healthy Pagefile
Volume 8 I Win_8 NTFS Partition 78 GB Healthy
Volume 9 J FAT32 Partition 511 MB Healthy


Leaving DiskPart...

Once you have that info you can run chkdsk and sfc specifying the drive letter of your Windows boot drive as it's seen from the install DVD.
My System SpecsSystem Spec
14 Oct 2012   #7

Windows 7 Home Premium 64bit

my comp is running a scan now that i was somehow able to achive by:
x:\sources>chkdsk c: /r
it started at 11pm Israel time (14 hours by now)
wish for the best...
My System SpecsSystem Spec
14 Oct 2012   #8

Windows 7 Home Premium 64bit

i was able to do chkdsk , but not sfc :" windows resource protection could not perfom the requested operation"
what should i do next?
My System SpecsSystem Spec
14 Oct 2012   #9

Windows 7 Home Premium 64bit

when i rebooted it says *Hard disk name*
s.m.a.r.t bad, backup and replace
My System SpecsSystem Spec
15 Oct 2012   #10

Windows 10 Pro X64

Sounds like it's time to backup any data you don't want to lose then replace the hard drive and either restore to factory if you have the DVD or do a Clean install using a downloaded .iso to create a DVD to install from.

Official Windows 7 SP1 ISO from Digital River My Digital Life
My System SpecsSystem Spec

 Classpnp.sys for crying out loud :(

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