problem after instlation "Classpnp.sys"

Discussion in 'Windows 7' started by alihht, Dec 26, 2008.

  1. alihht

    alihht MDL Novice

    Dec 26, 2008
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    After installing windows 7, I've faced booting problem.

    The loading screen of windows 7 showed up, but it's stopped suddenly and my processor flash light's stopped working.

    I tried Safe mode.

    It's stopped running this file : Classpnp.sys

    what is the solution ?

    Regards,
     
  2. bchat

    bchat MDL Smart Azz

    Nov 7, 2008
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    Google "Classpnp.sys", see if any of the articles are useful - it will give you something to do while waiting for a reply.;)
     
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  3. alihht

    alihht MDL Novice

    Dec 26, 2008
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    Actually, I tried but unfortunatly nothing helpfull in google results. Because of that I've decided to ask here.
     
  4. admin

    admin Administrator
    Staff Member

    Apr 24, 2007
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  5. alihht

    alihht MDL Novice

    Dec 26, 2008
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    I tried what's in the link, but nothing happend.

    I will try this:

    Thank you for trying to help me.

    Regards,
     
  6. alihht

    alihht MDL Novice

    Dec 26, 2008
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    nothing happend.

    I don't know why. is this just a bad luck?

    why just me?
     
  7. easy90rider

    easy90rider MDL Novice

    Dec 28, 2008
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    #7 easy90rider, Dec 28, 2008
    Last edited: Dec 29, 2008
    (i'm new here):D
    I have exactly the same problem, I had it with 6956 too,
    after the first restart PC hangs and nothing happens...it restarts and it restores my pc to the pre-install state.
    I don't have a achi option in my bios.
    my specs:
    CPU: AMD Athlon64 x2 4200+ 65W
    MB: Asus M2N-VM DVI(can't update bios I currently have 0201)
    RAM: 2x 1GB Kingston value ram 666MHz
    HDD: Western Digital WDC WD1600JB-00REA0 160 GBytes
    DVD LG Electronics:HL-DT-ST DVD-RAM GSA-H22N ATA ATAPI
    Network: Realtek RTL8139 Family PCI Fast Ethernet NIC
    ps. windwos 7 is working great in virtual machine
    i think we might have to wait for official beta:(
    LE:
    On another forum somebody has the problem we have,but he had it with build 6801, and he has the same cpu and the same chipset(Nvidia MCP68) as I do.
    I managed to update my bios to the newest,and now it hangs at "vga.sys" and "NDProxy.SYS".
    I have attached ntbtlog:
     

    Attached Files:

  8. igloo

    igloo MDL Novice

    Dec 8, 2008
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    I have the same problem. My system is P35 board, C2d, 4G ddr2, 8600GTS. I tried to install to a backup hd hooked on to the IDE port. The main sata hd has been unplugged.
    I noticed you are using a ide driver too. Is it because of the ide controller driver problem?
     
  9. easy90rider

    easy90rider MDL Novice

    Dec 28, 2008
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    Well now I really have no ideea what is wrong:(
    Offcial beta is coming out soon:) , I hope it will have this problem solved:D
     
  10. Gyrxiur

    Gyrxiur MDL Junior Member

    Feb 7, 2008
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    what about copying that file from vista?
     
  11. igloo

    igloo MDL Novice

    Dec 8, 2008
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    Typing from win7.7000! :)
    After tried all sorts of methods, finally I found the problem. My IDE HD's jumper was set to "cable select". After I changed it to "Master", everything went through smoothly.
     
  12. easy90rider

    easy90rider MDL Novice

    Dec 28, 2008
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    OMG I can't belive it:D It is finally working:D
    The thing that solved it was using D-sub(vga) port of the motherboard to connect the monitor :D and not the DVI

    I will try now the dvi port too:)
     
  13. tintuk

    tintuk MDL Novice

    Jan 24, 2009
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    #15 tintuk, Jan 24, 2009
    Last edited: Jan 24, 2009
    same problem!!

    i just started experiencing this last night! it seems to be caused by classpnp.sys file. i can't start up in safemode or anything. constant rebooting and hanging. i hope someone comes up with a 'fix' fast!

    i am using a toshiba qosimo laptop with all nvidia.

    any suggestions at all will help. unfortnately, i didnt back up (idiot i know) all the home movies and pics of my deceased wife. i have no access to them now.

    please help.

    i have the latest build of windows 7 beta
     
  14. HSChronic

    HSChronic MDL Expert

    Aug 25, 2007
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    just install vista or xp over that partition, do not format and it will get you a stable OS to back stuff up with. After that reinstall Windows 7. Check the official MSFT forums too there might be one there or sevenforums.com
     
  15. buynano

    buynano MDL Novice

    Nov 7, 2010
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    Guys i have the same problem and am pulling my hair out.
    My system ran fine for 9 months and i had to do 4 clean reinstall because of this classpnp.sys problem in the last month. Can someone help?

    I have a OCZ SSD running