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My Acer 5100 laptop will not boot up. I am using windows vista home edition. The error I am receiving is "ntoskrnl.exe" status 0xc0000098. What to do?

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  • cpaul1 Sep 11, 2009

    I do not have a boot or recover disk. How can I restore my Acer 5100 win vista op sys without a boot disk? Error ntoskinl.exe

  • cpaul1 Sep 11, 2009

    I have an Acer 5100 laptop. The Win Vista home will not boot up. ntoskrnl.exe error. No boot disk. Pulling the battery and uplugging cord for 10 min. did not work. How can I get to the restore feature on computer? It will not go to latest known good boot.



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What changes have you made recently (if any). Also, do you have Windows XP or Vista CD/DVD (not the backup CD/DVD)?

Posted on Sep 11, 2009

  • Adnan Bhatti
    Adnan Bhatti Sep 11, 2009

    If you DO NOT have your Windows XP disk

    • Download RC.ISO from Here.

    • Now burn this ISO image to a CD and boot your computer with it.
      NOTE: Keep in mind that this is different than burning a file to a CD-ROM. If you do not know how to burn an ISO image, then download CDBurnerXP Pro to another Windows machine and install it. Then go Here for instructions for burning the ISO image

    • Once the CD is created, place it in the defunct computer

    • Then reboot your broken PC with that CD in the CD-ROM drive.

    • Make sure the PC is set to run from the CD as the primary boot device.
      You do this by setting your PC to boot to the CD-ROM in BIOS (enter
      bios by pressing f1, f2 or del key during memory count up, then search
      for boot order, and set the CD as the first boot device)

    • When the PC boots, it will boot from the CD...after the first several screens load, you will be given a choice to choose R for Recovery Console. You will be asked to log in.
      For Windows XP Home, there is not password, just hit ENTER. For Windows
      XP pro, ask whomever set up the machine what password they used.

    Running "ChkDsk"

    • At the Recovery console C:\WINDOWS prompt, type
      chkdsk /r

    • Press ENTER

    • Let this scan run UNINTERRUPTED until completed (30 min or so depending on the drive)

    • Report any errors in your next reply

    • Once the scan is complete, Type exit, and then press ENTER to quit Recovery Console.

    • Your computer will now restart

  • Adnan Bhatti
    Adnan Bhatti Sep 11, 2009

    Please post the results here so we can investigate further if the problem remains.


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1- Un ug the power cord.
2- Take off the battery
3- Wait for 10 minutes.
4- Put back the battery, turn on your Lap top, it should boot up and run normally.

Posted on Sep 11, 2009

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Here's what you should do to boot your Windows up again and re-install SP1 (Already confirmed working by other users):

You'll need to manually restore some files again to the version that came with your Windows installation DVD. Use the Windows DVD to boot into repair mode and restore these files using the command prompt:

In your "\Windows\System32\" folder, restore just these files:


ntoskrnl.exe (You shouldn't need to replace it because it's not really corrupted.)

ntkrnlpa.exe (Same as ntoskrnl.exe. Try booting without replacing them first)

And in your "\Windows\System32\Drivers" folder, restore these:







Make sure to rename or backup the files you're going to replace (just in case you do something wrong). All the original files you'll need to replace your "corrupted" files with should be found inside the virtually mounted drive (X:\), so they should be in "X:\Windows\System32"\ and "X:\Windows\System32\Drivers\" (you don't need to "expand" any files like the old XP days, you'll just need to use basic "copy" and "rename" commands).

HINT: If you're not too comfortable using the command prompt, you can use the notepad's file browser to copy and paste files from inside the repair DVD. Just type "notepad.exe" in the command prompt and set the file type to ALL inorder to see non-txt files.(WARNING: It doesn't prompt you when overwriting files and It doesn't show hidden or system files, but you shouldn't need it to anyways)

After it boots successfully you should try to reinstall SP1 again BUT DO NOT USE WINDOWS UPDATE TO REINSTALL IT, DOWNLOAD THE STANDALONE RELEASE. It's highly recommended to reinstall SP1 again because eventhough after you're going to boot, Windows will say that it's removing all SP1 files because the install failed, it actually doestn't replace most of the system files. Your copy is going to be a hybrid between no SP and SP1. When you reinstall SP1, Stage 3 is going to be repeated twice, once before Stage 1 and then again after Stage 2. But that is completely normal.

You should'nt need to restore any other files for you Windows to boot. Don't just replace all the files inside your "System32\Drivers\" folder like what that article said, that will probably do more harm than good. I used the debug boot log file from inside my Windows folder (ntbtlog.txt) to determine which files Windows is using while attempting to boot, and then I checked their file version from inside the repair DVD (right click>properties>details or just leave the mouse pointer on the file for a second); If it was 6.0.6001.18000 (SP1 release version), I replaced it with the old version from my boot DVD.

Good luck!

Posted on Sep 11, 2009

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For Multi-Processor systems:
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