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Cannot Repair WinXP Pro To Startup Due To PCI.sys Missing

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PCI.sys Missing

LINDA RENKEN asked on February 14, 2013. Status: Answered & Closed.

Cannot Repair WinXP Pro To Startup Due To PCI.sys Missing

» I has just added more RAM to the PC and the BIOS accepts new RAM, then when the system boots on by WinXP Pro it says PCI.sys is missing and wants me to hit R for Repair, After I put In Win CD and reboot the system, the system is loading up to Kernel and everything stops. I prefer to generate a bootable CD that starts up into Safe Mode.

Best Answer

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CHRISTOPHER WELCH replied on February 17, 2013

All Answers:

  1. JEFFERSON MORRIS replied on February 14, 2013: » Use the Windows XP Recovery Console to expand Pci.sy_ from the I386 folder on the Windows XP CD-ROM to the \%SystemRoot%\System32\Drivers folder on the hard disk. To do this, follow these steps: A.Start the computer to the Recovery Console.

    a. Insert the Windows 2000 startup disk into the floppy disk drive, or insert the Windows 2000 CD-ROM into the CD-ROM drive. Restart the computer.

    b. Click any options that you have to have to start the computer from the CD-ROM drive if you are prompted to do so. The "Welcome to Setup" page appears.

    c. Press R to repair a Windows installation.

    d. Press C to start the Recovery Console.

    e. Type the number that corresponds to the Windows XP installation that you want, and then press ENTER.

    f.Type the local administrator password, and then press ENTER.

    B.At the Recovery Console prompt, type map, and then press ENTER. Note the drive letter that is assigned to the CD-ROM drive.

    C.Type the following at the command prompt, and then press ENTER

    expand drive:\i386\pci.sy_ c:\windows\system32\drivers /y where drive is the drive letter of your CD-ROM or DVD-ROM drive, where c is the drive on which Windows is installed, and where winnt is the folder in which Windows is installed.

    NOTE: In the preceding command, there is a space between pci.sy_ and c:\windows

    The following message is displayed: pci.sys 1 file(s) expanded.

    D.Type exit, and then press ENTER to quit the Recovery Console.

    E.Restart Windows in the usual manner.

  2. LINDA RENKEN replied on February 14, 2013: » Note that if you choose to follow the Microsoft engaged Support Engineer "expert" instructions to expand a pci.sys from your genuine bootable XP installation CD, if you currently have Service Pack 3 installed on your system and you DO NOT have a genuine bootable XP installation CD that is also Service Pack 3 (most people don't), you are going to be in trouble.

    In other words, if your genuine bootable XP installation CD is not Service Pack 3, you are going to have a problem.

  3. JEFFERSON MORRIS replied on February 15, 2013: » when using my WinXP Pro CD to boot up, it hang while loading kernel before I can reach your advised step A.c). So do I have any other alternative(s)?

    After taking out new RAM, it still cannot boot up. My genuine bootable XP installation CD bundled with SP 1a, however, I had another SP 3 CD but not bootable. Do I have any other choices?

  4. J COLLETTE replied on February 16, 2013: » After taking out new RAM, it still cannot boot up. Are you still getting the pci.sys error or not? Do you only get the pci.sys error when you have the new RAM installed?

    If you only get the error when the new RAM is installed and the system works okay without the new RAM, what do you make of that?

  5. JEFFERSON MORRIS replied on February 17, 2013: » Yes, the error occurs when I put the new RAM in despite of the Kingston code in the same category i.e. KVR533D2N4/256 and KVR533D2N4/512. They are DDR2 and I had the first model in pair and the second model single piece.

    Before I took the RAM out, I disconnected the SATA hard drive and hooked it onto other PC in order to copy the corrupted or missing file of pic.sys to C:\Windows\System32\Drivers. But it didn't work either.

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