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Compaq Presario R4000 Notebook PC support

"Missing NTLDR" Serious Error Message Appears During Startup

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Description

An error message referring to "NTLDR " may appear when Windows is starting.

Solutions

Perform one of the following solutions to resolve this issue:

Notebook is booting from a non-bootable source

NTLDR errors may occur if the computer is attempting to boot from a non-bootable floppy disk, CD-ROM or memory card.
  • Verify no floppy diskette is in the computer, unless you are attempting to boot from a diskette.
    NOTE:If you are attempting to boot from a floppy diskette and are receiving this error message it is likely that the diskette does not have all the necessary files and/or is corrupt.
  • If you are attempting to install Windows XP or Windows 2000 and are receiving this error message as the computer is booting verify that your computer BIOS has the proper boot settings.
    NOTE:If you are attempting to run the install from the CD-ROM make sure the CD-ROM is the first boot device, and not the hard disk drive. If the settings are correct, the computer displays the following prompt:
    • Press any key to boot from the CD
    When you see this message press any key such as the Enter key immediately, otherwise it will try booting from the hard drive and likely get the NTLDR error again.
  • Verify a memory card or memory stick is not present in the card or flash reader while booting the notebook.

Computer hard disk drive is not properly setup in BIOS

Verify that your computer hard disk drive is properly setup in the BIOS / CMOS setup. Improper settings can cause this error.

Corrupt NTLDR and/or NTDETECT.COM file

The NTLDR and/or NTDETECT.COM files may be corrupted. Use the following steps to replace these files. This method is for Windows XP users.
  1. Insert the Windows XP bootable CD into the optical (CD or DVD) drive and restart the notebook.
  2. When prompted to press any key to boot from the CD , press any key on the keyboard.
  3. Once in the Welcome to Setup screen, press the R key to repair Windows.
  4. Press the 1 key and then press Enter .
  5. Type the Administrator password at the prompt.
  6. Copy the NTLDR and NTDETECT.COM files to the root directory using the following steps:
    1. Type copy d:\i386\ntldr c:\ (assumes the optical (CD or DVD) drive is d) and then press the Enter key.
    2. Press the Y key at the Overwrite ntldr? prompt.
    3. Type d:\i386\ntdetect.com c:\ and then press the Enter key.
    4. Press the Y key at the Overwrite ntldr? prompt.
  7. Once both files have been successfully copied, remove the CD from the optical (CD or DVD) drive and type exit at the prompt and then press the Enter key. The notebook will reboot.

Corrupt boot sector / master boot record

The Master Boot Record (MBR) is a section of the hard drive that is used by the PC to start the Windows operating system. If the MBR is corrupt, the PC will not start. The Windows Operating System Disc (OSD) provided with your HP notebook PC can be used to repair the Master Boot Record (MBR).
Follow the steps below carefully to repair the MBR:
  1. Insert the Windows Operating System Disc into the optical (CD or DVD) drive.
  2. Press and hold the Power button for 5 Seconds to turn off the PC. Then press the Power button again to turn on the PC.
  3. When prompted to press any key to boot from the CD , press any key on the keyboard.
  4. Once in the Welcome to Setup screen, press the R key to repair Windows.
  5. Type the Administrator password at the prompt.
  6. At the C:\WINDOWS> prompt, type FIXMBR then press the Enter key to continue.
    CAUTION:FIXMBR may damage your partition tables if you proceed. This could cause all the partitions on the current hard disk to become inaccessible. If you are not having problems accessing your drive, do not continue.
  7. At the Are you sure you want to write to a new MBR? , press the Y key and then press the Enter key. Once the MBR is successfully written, restart the notebook PC by pressing the Power button.

Re-install Microsoft Windows XP

If you have tried each of the above recommendations that apply to your situation and you continue to experience this issue it is possible you may have a seriously corrupted version of Microsoft Windows. If you are encountering this issue during your setup you may wish to completely erase your computer hard disk drive and all of its existing data and then install Microsoft Windows XP.
Follow these steps to repair the Windows XP operating system:
  1. Connect the notebook to the AC adapter plugged into the wall.
  2. Press the Power button to start the notebook.
  3. Immediately insert the Operating System CD-ROM (OSCD) into the notebook. The OSCD was included with your notebook when it was purchased.
  4. Press the Power button for five seconds to power off the notebook.
  5. Press the Power button again to start the notebook.
  6. When prompted, press any key to boot from the CD. After a few minutes, the Welcome to Setup screen is displayed.
  7. Press the Enter key to continue. A Licensing Agreement screen is displayed.
  8. Press F8 to accept the agreement and continue. The Setup window is displayed.
  9. Press R to repair the selected Windows installation. This process may take 30 minutes to an hour to complete.
    The notebook restarts in Windows after the process is complete.
To prevent this issue from occurring in the future, download and install all Critical and Recommended updates using Microsoft Windows Update (In English).
Compaq Presario R4000 Notebook PC

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