There are a number of possible causes for NTLDR errors, including the most common “NTLDR is missing” issue.
The most common reason for this error is when your computer is trying to BOOT from a hard drive or flash drive that is not properly configured to be booted from. In other words, it’s trying to boot from a non-bootable source. This also would apply to media on an optical drive or floppy drive that you’re trying to boot from.
Other possible causes include corrupt and misconfigured files, hard drive and operating system upgrade issues, corrupt hard drive sectors, an outdated BIOS, and damaged or loose IDE Cables.
Solution 1. Restart Computer
Restart your computer. The NTLDR missing error could be a fluke.
Solution 2. Unplug All Removable Media
Since the “NTLDR is missing” issue is often caused by BIOS trying to load from an external non-bootable drive, you can try unplugging all external drives, and remove all removable media, such as CD, floppy disks, memory cards, and USB devices to make sure the BIOS doesn’t try to load from any of them.
Solution 3. Change BIOS Boot Order
Alternatively, you can check the BIOS boot order to ensure that the PC tries to load from an internal drive first. To check the boot order, follow these steps:Note: Make sure that the device you will select has boot files (or Windows operating system files) installed.
Step 1: Restart the PC.
Step 2: Press the necessary key to open BIOS menu. This key depends on the computer manufacturer and computer model.
Step 3: If the screen shows multiple keys, please find the key to open “BIOS,” “setup” or “BIOS menu.”
Step 4: Use the arrow keys to select the Boot tab. Move the hard drive to the top of priority list.
Solution 4. Reset Active Partition
If your computer’s partition marked as active does not contain the Windows boot files (or boot files for another operating system), you cannot start your PC and you may receive the following error message:
NTLDR is missing
Press Ctrl + Alt + Del to restart.
On Intel-based computers, the system partition must be a primary partition that has been marked as active for startup purposes.
There can be only one active system partition at a time. If you want to use another operating system, you must first mark its system partition as active before restarting the computer.
Now, to solve this problem, you can reset the active partition to fix this problem.
MiniTool Partition Wizard is a wise choice for most common users to set partition as active since this tool offers wizard-based operation, high security and excellent performance. Detailed steps are here.Note: The free edition of MiniTool Partition Wizard doesn’t provide Bootable Media Builder. Here, maybe, you can try the professional edition.
Step 1: You need to boot your computer via MiniTool Partition Wizard Bootable Disc to get the following window. Here, please choose the first option “Partition Wizard” to enter the main interface of MiniTool Partition Wizard.
Step 2. Select the target partition which needs to be set as active and then click “Set Active” module.
Step 4: Click “Apply” button on the top left corner and tap “Yes” to carry out this change.
I successfully solved the NTLDR is missing by using MiniTool Partition Wizard.
Solution 5. Update Your Motherboard’s BIOS
Occasionally, sometimes, if the basic input/output system (BIOS) on your computer is outdated, you may also receive the NTLDR missing problem.
So well, please make sure that the latest revision for BIOS is installed on the computer. If not, you should contact the computer manufacturer to inquire about how to obtain, and then install the latest BIOS update that is available for the computer.
Solution 6. Reseat All Internal Data and Power Cables
NTLDR missing Windows 10 could be caused by loose or malfunctioning IDE cables. So, try replacing the IDE cable with a new one if you suspect it might be faulty.
Before reseating any internal data or power cable, you must power down the computer and open the case.
Solution 7. Rebuild MBR
NTLDR missing issue may also appear if the MBR is corrupted. In this situation, the only solution is to repair the MBR. MiniTool Partition Wizard Bootable Disc is recommended here since it can help to easily and quickly rebuild MBR. Now, let’s see the detailed steps.
In the main interface of MiniTool Partition Wizard, select the disk whose MBR is damaged and then click “Rebuild MBR” feature.
Finally, click the “Apply” button to perform the MBR restoration. When Partition Wizard completes all operations, please quit from the program and boot from local hard disk again.
Solution 8. Restore NTLDR and Ntdetect.com File
The NTLDR and Ntdetect.com files are important system files that are used by your computer to start the Windows operating system.
These files are normally hidden and system protected, but they can become damaged, corrupted or deleted for a number of reasons. As a result, you cannot start your computer, and then you will receive the “NTLDR is missing” error message.
In this situation, you need to restore the damaged/corrupted or missing NTLDR and Ntdetect.com files to solve this problem easily.
Solution 9. Reinstall Windows
Here, if none of the solutions listed and described worked for you, it is safe to assume that the only thing that can resolve the “NTLDR is missing” error for you is a complete reinstallation of Windows.
Copy Disk feature provided by MiniTool Partition Wizard can help to copy all partitions and data from one disk to another in several steps, as showing in the following.
First, boot computer by using MiniTool Partition Wizard Bootable Disc.
Then, in the main interface of this professional tool, select the disk which needs copying and activate Copy Disk from the left action panel .
Next, select the disk that will save the copy of the source disk as the target disk and then click “Next.”
The target disk should be large enough to hold all content on source disk, and you also need to backup all important data on this target disk in advance, because all its data will be deleted.
Next, choose a suitable copying method to decide the layout of the target disk and then click “Next” button.
- If you are an SSD or advanced format HD user, we highly suggest checking the option “Force to align partitions to 1MB”, which can improve disk performance.
- Check the “Use GUID Partition Table for the target disk” to successfully clone MBR disk to GPT disk.
After that, click the “Finish” button to go back to the main interface.
Finally, click the “Apply” button on the top left corner to perform these operations pending.
Now, you can safely reinstall Windows to fix the NTLDR missing error.
Solution 10. Replace Hard Drive
If you still receive the NTLDR is missing error after reinstalling Windows, you’re most likely facing a hardware issue with your hard drive. In this situation, the only way you can do is to replace the damaged hard drive with a new one and then reinstall Windows.
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